Discretion. Power.

DISCOVER

The problem

You don't need another screen.

Smartwatches interrupt you all day. Fitness bands don't go with anything. And a fixed-size ring can't follow a body that changes.

Tetra gives you continuous health tracking, in a band you can wear anywhere, all the time.

The Tetra app: daily score, sleep, activity and heart rate

  • Smartwatch

    Screen

    It lights up, it buzzes, it never lets you forget it's there.

  • Smart ring

    Fixed size

    Your fingers swell, shrink, change with the seasons. It doesn't.

  • Fitness band

    Gym only

    It goes with nothing. You end up taking it off, and then it measures nothing.

  • Tetra

    No screen

    The same tracking, in something you don't want to take off.

  • A woman sleeping, wearing the Tetra band
    Sleep & recovery

    Get the best sleep of your life

  • A woman on the move, wearing the Tetra band
    Activity & movement

    Make every move count

  • A quiet moment, wearing the Tetra band
    Stress

    Get ahead of your stress

  • A woman wearing the Tetra band
    Heart health

    Listen to what your heart is telling you

  • The Tetra band in water
    Worn day and night

    Keep it on, day and night

  • The Tetra band on the wrist
    Share with someone you love

    Put the people who love you at ease

Made with care, for insights that go deeper

Designed like jewelry and built to be worn day and night, the Tetra band opens up real insight into your overall health: sleep, activity, stress, heart health and plenty more.

Meet the band

Your body, in plain English.

The inside of the Tetra band: optical sensor and circuit board

The Fitmo app is free for life, no subscription. Your readings, your daily scores and your trends are always there, on iOS and Android.

Heart health

Sleep & rest

Blood pressure trends

Blood oxygen

Activity & movement

Stress

Recovery

Share with someone you love

Backed by the country's leading health experts

Fitmo's medical advisors guide what we measure, how the app explains it, and what every number is worth. Their combined clinical expertise makes it easier for hundreds of thousands of people to understand what their body is actually doing.

  • Board-certified

    25+ years experience in a medical specialty

  • Industry innovations

    40+ published studies in medical journals

  • Clinical oversight

    They defined what every score on your Tetra means

Dr. Melynda Barnes, MD

Dr. Melynda Barnes, MD

Chief Medical Officer

Triple board-certified Obesity Medicine, Facial Plastic and Reconstructive Surgeon, and Otolaryngologist

Stanford University
Yale Medical Group's Board of Directors
Dr. Raoul Manalac, MD

Dr. Raoul Manalac, MD

Senior Director, Clinical Strategy

Board-certified Internal Medicine Physician

Johns Hopkins University
American Board of Obesity Medicine
Dr. Nitin Vaswani, MD MPH MBA

Dr. Nitin Vaswani, MD MPH MBA

Director, Clinical Strategy

General Surgeon and Clinical Pathologist trainee

Johns Hopkins University
University of Pennsylvania

Tetra isn't like other trackers

A piece of jewelry that tracks your health around the clock. No screen, no notifications, no subscription.

Tetra TETRA
The others THE OTHERS
What you're after
Understanding your body day to day, quietly
Athletic performance and step counts
Look
Jewelry that goes with everything, dinner included
A device you spot from across the room
Screen
None. Nothing buzzing on your wrist
Lit screen, alerts all day long
Fit
Adjustable clasp, follows a wrist that changes
Fixed size, measured and ordered in advance
Subscription
None. One purchase
6 € to 30 € a month
Health tracking
Heart rate, blood oxygen, HRV, sleep stages, stress, recovery
Often just steps and a sleep score
Sharing with family
Included, with a QR code
Subscribers only, when it exists at all
Price
€229, once
300 € to 500 € the first year, then every year after

You should be able to wear it without thinking about it

Most trackers announce themselves.

Tetra gets noticed too, for the right reason.

A module 5.6 mm thin.

0.4 oz on an adjustable clasp.

No screen, nothing lighting up in the middle of a conversation.

TetraTETRA :

"People compliment your bracelet. Nobody guesses it's a sensor."

The othersTHE OTHERS :

"A sports band you take off the moment you dress up."

A device you take off measures nothing. The best sensor is the one that stays on.

Your health data shouldn't come with a monthly bill

TetraTETRA :

One purchase. Free app for life. Your readings stay available, no conditions and no expiration date.

The othersTHE OTHERS :

6 € to 30 € a month just to keep seeing your own data. Stop paying, stop seeing.

Do the math: a 6 € a month subscription runs 216 € over three years. That's more than the Tetra band itself, and you still own nothing.

Numbers about your health, not your performance

TetraTETRA :

Heart rate, blood oxygen, heart rate variability (HRV), deep, light and REM sleep stages, stress level and a recovery score. Continuously, day and night.

The othersTHE OTHERS :

Steps, calories, and a sleep score with no breakdown of the stages.

Tetra keeps recording even when your phone is in another room, and syncs everything the moment you pick it back up.

You look when you want. It never nags.

A band that alerts you all day ends up creating the very worry it claimed to settle.

Tetra takes the opposite approach.

No screen, so no alerts on your wrist.

Automatic detection lives in the app: turn it on if you want it, turn it off if it weighs on you.

And if you want someone close keeping an eye out, you add them with a QR code. Either direction, you decide.

It's your body. You choose when you look at it.

How does Tetra compare?

No screen, no notifications
Wears like jewelry
Adjusts to a wrist that changes
Health tracking
Share data with someone close
No subscription
3-year cost*
Tetra
Tetra
€229
Smart ring
Smart ring
Fixed size
Subscription required
Depends on brand
≈ €565
Smartwatch
Smartwatch
Sometimes
Depends on model
€250 to €800

The data you're after, in a piece of jewelry you won't want to take off.

* Tetra: one-time purchase, no subscription. Smart ring: €349 plus €5.99 a month over three years. Smartwatch: observed retail price range, excluding any optional subscription.

  • [FR] Bracelet Tetra dans ses trois finitions, argent, or rose et or vert
  • [FR] Bracelet Tetra or rose carmin porté au quotidien
  • [FR] Femme en mouvement portant le bracelet Tetra or rose
  • [FR] Bracelet Tetra argent sous l'eau, étanche 10 ATM
  • [FR] Bracelet Tetra or et vert impérial posé sur des pierres
  • [FR] Bracelet Tetra porté avec une tenue de ville
  • [FR] Bracelet Tetra or rose carmin porté au poignet
  • [FR] Barre pavée de cristaux du bracelet Tetra argent
  • [FR] Détail du pavage de cristaux du bracelet Tetra argent
  • [EN] The Tetra band in all three finishes: silver, rose gold and green gold
  • [EN] The rose gold Tetra band worn every day
  • [EN] Woman on the move wearing the rose gold Tetra band
  • [EN] Silver Tetra band underwater, water resistant to 10 ATM
  • [EN] Gold and imperial green Tetra band resting on pale stones
  • [EN] The Tetra band worn with everyday clothes
  • [EN] Carmine rose gold Tetra band worn on the wrist
  • [EN] Crystal pavé bar on the silver Tetra band
  • [EN] Close-up of the crystal pavé bar on the silver Tetra band
  • [DE] Das Tetra-Armband in seinen drei Ausführungen: Silber, Roségold und Grüngold
  • [DE] Das Tetra-Armband in Roségold Karmin im Alltag getragen
  • [DE] Frau in Bewegung mit dem Tetra-Armband in Roségold
  • [DE] Das silberne Tetra-Armband unter Wasser, wasserdicht bis 10 ATM
  • [DE] Das Tetra-Armband in Gold und Imperialgrün auf hellen Steinen
  • [DE] Das Tetra-Armband zu Alltagskleidung getragen
  • [DE] Das Tetra-Armband in Roségold Karmin am Handgelenk
  • [DE] Kristallbesetzte Spange des silbernen Tetra-Armbands
  • [DE] Detailansicht der Kristallspange des silbernen Tetra-Armbands
  • [IT] Il bracciale Tetra nelle sue tre finiture: argento, oro rosa e oro verde
  • [IT] Il bracciale Tetra oro rosa carminio indossato ogni giorno
  • [IT] Donna in movimento con il bracciale Tetra oro rosa
  • [IT] Il bracciale Tetra argento sott'acqua, impermeabile 10 ATM
  • [IT] Il bracciale Tetra oro e verde imperiale posato su pietre chiare
  • [IT] Il bracciale Tetra indossato con un abbigliamento da città
  • [IT] Il bracciale Tetra oro rosa carminio indossato al polso
  • [IT] Barra pavé di cristalli del bracciale Tetra argento
  • [IT] Dettaglio del pavé di cristalli del bracciale Tetra argento
1 37

Low stock: price going up

Every Tetra is hand-calibrated, so we can't make them any faster. The price rises as stock runs out. Limit 2 per customer.

NEW

Tetra

What you feel is real.

Price going up
€279,00€229,00

Tetra records what you feel but can't explain, day and night: your heart, your nights, your stress, your blood pressure trends. The app turns it into something you can actually read, there when you want it and not before. No screen, no notifications.

30-day money-back guarantee
Free worldwide shipping
Free app for life
Ships by October 9
Offer available
Gift not added to your order Valid throughThursday, October 8
Finish: Crystal Silver
One payment. No subscription, ever. The app, every update and your data. Yours for life.
In stock: Estimated
MONEY-BACK GUARANTEE 30 DAYS

Not sold after 30 days? You get every penny back.

Try Tetra at your own pace. Thirty days is also how long it takes for your first trends to show up. If it's not for you, send it back and we refund you in full, no questions asked.

« In my patients over 45, cardiovascular symptoms get written off as hormones or stress far too often. »

« What I see in the exam room is a woman describing fatigue that has settled in, sleep that has gotten worse, sometimes palpitations at night, and a perfectly normal workup. Having several weeks of heart rate and variability data gives the conversation somewhere concrete to start. It steers my questions. »

Dr. Ana M.
Cardiology, cardiovascular prevention
Verified review

What you feel, you can finally see

Your labs are normal and you still don't feel right. Tetra records what happens between appointments, so you show up with readings instead of a feeling.

Jewelry, not a gadget

No screen, nothing lighting up or buzzing. In a meeting, at dinner, in front of your kids, nobody can tell you're tracking anything. Only you know.

A clasp that follows your body

Your wrists aren't the same size depending on heat, water retention or the time of the month. Not a ring, not a rigid bangle: a slider that adjusts in a second, every day.

Continuous tracking that never interrupts you

Heart rate, HRV, blood oxygen, stress, sleep and blood pressure trends, day and night. No notifications. You open the app when you decide to.

Look out for someone, from a distance

The app lets you share your data with someone you choose, in either direction. A daughter can follow her mother. Sharing stops the moment you decide.

No subscription, and your data stays yours

One purchase, the app free for life. No feature behind a paywall, and your data never sold to anyone.

Tetra packs a multi-LED optical sensor and a three-axis accelerometer to measure your core data continuously. The app reads that data back to you as a clear picture of where your body is, day after day.

  • Heart rate, tracked continuously day and night
  • Heart rate variability (HRV)
  • Blood oxygen (SpO₂)
  • Stress level
  • Blood pressure trends
  • Detailed sleep: duration, efficiency, deep, light and REM stages
  • Physical recovery score
  • Physical and mental readiness score
  • Cycle tracking
  • Daily activity: steps, distance, calories
  • Waterproof for shower, pool and sea, and a 5-day battery

From that data, the app helps you see your trends over weeks and understand what wears your body down and what builds it back. Your trends give the direction, your doctor gives the reading.

Just wear it

Tetra wears like a bracelet, day and night. 0.4 oz, no discomfort, nothing to set up. The slider adjusts to your wrist in a second, and then you forget it.

Check your data when you decide to

No notification will come looking for you. You open the app in the morning with your coffee, or once a week. Your numbers are laid out plainly, with no jargon.

Watch your trends appear

After a few weeks, the patterns show up. The nights that count, the weeks that weigh on you, what brings your recovery back. These aren't impressions anymore.

Walk into your doctor's office with something

Several weeks of dated readings to put on the desk. You no longer say you've been tired for a while. You show them. And they draw the conclusion.

« I've been sleeping badly for years and mostly wanted to see what my nights actually looked like. For two weeks now I can see my deep sleep hours and how many times I wake up, and I realized I almost always wake up around 3 a.m. »

Anne-Marie D., verified customer
More information

The app is free for life for every Tetra owner. Works on iOS and Android, no subscription, nothing hidden behind a paywall.

You check your data when you decide to. You'll find your heart rate, your HRV, your blood oxygen, your stress level, your blood pressure trends, your nights in detail, your recovery and your cycle tracking.

It also includes sleep support, with an analysis of your night, suggestions, and a library of sounds to fall asleep to. And if you want, you can share your data with someone close.

Guided setup in a few minutes. And if your phone isn't nearby, the band keeps recording on its own: everything syncs the moment you reconnect.

Tetra was built for women who keep being told everything is normal. The labs are fine, people talk about hormones, stress, age, and yet something is off.

The problem isn't your doctor. It's that one blood test a year is a snapshot, while what you're living is a trajectory. Between two appointments, nobody is watching.

Tetra watches, continuously, with no screen and no notifications. Nobody can tell you're tracking anything, and nothing shows up to judge you or grade you. You open the app when you feel like it.

  1. Design: Jewelry format, no screen. Built to be worn day and night. Weight 0.4 oz, thickness 5.6 mm.
  2. Clasp: Sliding and adjustable, one size for every wrist. Adjusts in a second, every day.
  3. Finishes: Crystal Silver, Carmine Rose Gold, Imperial Green Gold. Fine materials, crystal-set bar and tennis chain.
  4. Band included: A second soft band, free, for workouts, sleep and water.
  5. Water resistance: 10 ATM, roughly 330 feet. Shower, pool and swimming.
  6. Sensors: Multi-LED optical sensor and three-axis accelerometer.
  7. Battery: 5 days. Full charge in 2 hours with the magnetic cable included.
  8. Connectivity: Bluetooth 5.3. Works with iOS 11 and Android 6 and up.
  9. App: Free for life on iOS and Android. No subscription, no paid features.
  • Heart rate, continuously, min, average and max
  • Heart rate variability (HRV)
  • Blood oxygen (SpO2)
  • Stress level
  • Blood pressure trends (observational, not medical)
  • Detailed sleep: duration, efficiency, deep, light and REM stages
  • Physical recovery score
  • Physical and mental readiness score
  • Activity: steps, distance, calories
  • Cycle tracking

No, and that's the whole point. Tetra has no screen. It's a jeweled band, with a crystal-set bar and a fine chain. In a meeting, at dinner, in front of your kids, nobody can tell you're tracking anything.

Yes, and every day of the year. Tetra isn't a ring or a rigid bangle: it's a band with an adjustable sliding clasp.

Your wrists aren't the same size depending on heat, water retention, hormones or the time of the month. A fixed size, picked on one given day, never works every day. One size, every wrist.

No. Tetra has no screen, so it can't show you anything, remind you of anything, or hold anything against you. It records, and you decide when you open the app.

If you'd rather it watch certain numbers automatically, that feature is in the app and you turn it on yourself. It's off by default.

Yes. The app lets you add someone and share your health and activity data, in either direction. A daughter can follow her mother's numbers, a spouse can follow their partner's.

Sharing works by invitation, and it stops the moment you decide.

Yes. Tetra is water resistant to 10 ATM, tested to roughly 330 feet. Shower, pool, swimming, no problem.

For chlorinated water and salt water, the free second soft band is ideal: nothing fazes it, and you keep the set finish looking bright. Rinse with clean water after swimming, like any piece of jewelry.

When your Tetra arrives, you'll find:

  • The Tetra band in the finish you chose
  • A second soft band, free*
  • A magnetic charging cable
  • A gift box
  • A clear quick-start guide

*While supplies last.

No. Tetra gives you estimates and trends to watch over time, so you can prepare for and get more out of your appointments. You show up with readings instead of a feeling. The interpretation and the conclusion stay with your doctor.

Yes. Fitmo is a French company and your data is:

  • Encrypted end to end
  • Hosted on European servers under GDPR
  • Accessible only by you, or the people you authorize

We never sell your data and we don't share it with any commercial third party. You can delete it permanently at any time from the app.

  • Processing: Orders are prepared within 1 business day.
  • Delivery time: 6 to 8 business days depending on your address.
  • Trial period: You have 30 days to try Tetra.
  • Returns: If it's not for you, the return is simple and no questions asked, for a full refund.

The band that gives you something to show

You were told it was hormones, stress, age. Your labs are normal and you still don't feel right. The problem is that between two appointments, nobody is watching.

  • See what stress and your nights are actually doing to your body
  • Follow your blood pressure trends, day after day
  • Walk into your doctor's office with readings, not a feeling
View full details

What women who wear Tetra say.

4.8
Karen M.Verified buyer September 2, 2026

Even prettier in person

It's even prettier in person than in the photos.

Helpful?
Rhonda B. September 2, 2026

Nobody can tell

Nobody at the office can tell it's a smart device. People ask me all the time where I got it.

Helpful?
Julie V.Verified buyer September 2, 2026

Thinner than I expected

I was worried it would look like a gadget but not at all. It's thin, it's discreet, and my daughter in law thought it was a jewelry store bracelet. I wasn't expecting a finish this nice.

Helpful?
Diane K.Verified buyer September 2, 2026

Now I know how I sleep

I've slept badly for years and mostly I wanted to see what my nights actually looked like. For two weeks now I can see my deep sleep hours and how many times I wake up, and I realized I almost always wake up around three. It doesn't fix everything but at least I know.

Helpful?
Lisa T.Verified buyer September 2, 2026

Forget it's on

I don't even feel it on my wrist, I forget it's there.

Helpful?
Stephanie H.Verified buyer September 2, 2026

Goes with everything

The silver color is really pretty and it goes with everything I own. I wear it to work and out at night.

Helpful?
Terri O.Verified buyer September 2, 2026

Wear it day and night

I've worn it day and night for about ten days now. I sleep with it and don't feel it, I do dishes with it, and it doesn't snag on my sleeves. That's the best part for me.

Helpful?
Debbie R. September 2, 2026

Looks like jewelry

Very pretty bracelet, it looks like real jewelry.

Helpful?
Patty G.Verified buyer September 2, 2026

Clasp holds well

The sliding clasp is really easy to adjust, it stays put on my wrist and doesn't move all night. No complaints.

Helpful?
Sandra K.Verified buyer September 2, 2026

Wear it in the shower

I keep it on in the shower, no problem at all.

Helpful?
Laura N.Verified buyer September 2, 2026

My sleep stages

The app shows me my sleep stages and I understand better why I keep waking up around four in the morning.

Helpful?
Wendy S. September 1, 2026

I get my tiredness now

I wake up tired a lot and I wanted to know why. For two weeks now I've been checking my nights in the morning with my coffee and I can really see the nights I stayed up too late.

Helpful?
Michelle P.Verified buyer September 1, 2026

Packed well

Got here in three days, everything was packed well.

Helpful?
Peggy L. September 1, 2026

A gift from my daughter

My daughter gave it to me for my birthday at the beginning of August and I haven't taken it off since. She knew I don't like watches with a screen lighting up all the time, and this one really is jewelry. I put it on every day, even to go to the farmers market.

Helpful?
Kim A. September 1, 2026

Five days per charge

They say five days of battery and that's what I get. I charge it Sunday night and don't think about it again.

Helpful?
Angela W.Verified buyer September 1, 2026

My sleep every morning

I check my sleep every morning, it's become a habit now.

Helpful?
Carla R.Verified buyer September 1, 2026

Easy shipping and app

Ordered on a Tuesday, got it Friday, in a nice little box. The app takes about five minutes to figure out and there's no subscription to pay, that's what sold me.

Helpful?
Vicki C.Verified buyer September 1, 2026

A gift from my husband

My husband gave it to me for our wedding anniversary. I haven't taken it off since, he picked well.

Helpful?
Cheryl D.Verified buyer August 31, 2026

Just like the photos

Just as described, the finish is really clean.

Helpful?
Brenda F.Verified buyer August 31, 2026

Blood pressure trend

I can see my blood pressure trend over the week, it gives me a general idea. It's not a medical reading but I find it useful.

Helpful?
Sharon Y.Verified buyer August 31, 2026

Something between visits

My brother had a heart problem last year so I pay more attention to myself now. The bracelet gives me a blood pressure trend and my average heart rate. It's not a medical reading and I know that, but it gives me something to follow between visits to my doctor.

Helpful?
Tammy L.Verified buyer August 31, 2026

Light and simple

Light on the wrist, I haven't taken it off in ten days.

Helpful?
Joanne E.Verified buyer August 31, 2026

My heart rate variability

I've been following my heart rate variability trends since I got it. I'm no expert but seeing a line over several days helps me spot the weeks where I'm doing too much at work.

Helpful?
Nancy J.Verified buyer August 31, 2026

Writing down my averages

I write down my average heart rate to talk about it with my doctor at my next visit. Easier than trying to remember everything.

Helpful?
Donna S.Verified buyer August 31, 2026

Great gift for my sister

Gave it to my sister for her 55th, she loves it.

Helpful?
SandyVerified buyer August 31, 2026

I sleep with it just fine

I'm usually a bad sleeper and I figured a bracelet would bother me at night. I actually forgot about it the very first evening. It's light and it stays in place until morning. No complaints.

Helpful?
ChristineVerified buyer August 31, 2026

Elegant at the office

I think it's really elegant, it looks like a piece of jewelry. I wear it to the office and out at night too.

Helpful?
LindaVerified buyer August 30, 2026

Very pretty on my wrist

It's really pretty, the finish looks expensive.

Helpful?
TracyVerified buyer August 30, 2026

Looks like a bangle

A friend thought it was a silver bangle. She was surprised when I told her it was a smart tracker.

Helpful?
Michelle August 30, 2026

Nobody guesses

People ask me all the time where I got it, nobody guesses.

Helpful?
Peggy August 30, 2026

A gift from my daughter

My daughter gave it to me last week, no special occasion, just because she knew I wanted to track my sleep without wearing a big watch. I put it on that same evening and I haven't taken it off since. It's pretty and really discreet.

Helpful?
RhondaVerified buyer August 30, 2026

Better bedtime, better nights

I used to go to bed at all different times without even realizing it. For two weeks now I've been seeing my nights in the app and I moved my bedtime up half an hour. I already wake up less tired.

Helpful?
Brenda August 30, 2026

Nice finish

The finish is clean, nothing sticks out and it doesn't look like plastic at all. Honestly I don't regret buying it.

Helpful?
DebbieVerified buyer August 29, 2026

You forget it's there

Light on the wrist, I forget it completely.

Helpful?
KathyVerified buyer August 29, 2026

Clasp is well done

The sliding clasp is well thought out, I adjust it in two seconds at night. It never feels tight.

Helpful?
CherylVerified buyer August 29, 2026

Doesn't move at night

Snug without being tight, it doesn't move all night.

Helpful?
Colleen August 29, 2026

Clear and quick to read

What I like is seeing how long I actually slept, not just what time I went to bed. The app is clear, I check it over breakfast and it takes me about thirty seconds.

Helpful?
SharonVerified buyer August 29, 2026

Something to go by

My doctor asked me to keep an eye on my blood pressure this summer. The bracelet doesn't measure it, it just gives a trend, but at least I have something regular to go by instead of just how I feel. I write down what I see and I'll bring it up at my next appointment.

Helpful?
MelissaVerified buyer August 29, 2026

Fine in the shower

I don't even take it off in the shower anymore, it's fine. After ten days I really don't feel it.

Helpful?
AngelaVerified buyer August 29, 2026

My sleep every morning

I look at my sleep every morning now, it's become a habit.

Helpful?
VickiVerified buyer August 29, 2026

No subscription

No subscription to pay, that's what sold me. I was tired of apps that want ten dollars a month. Here I buy the bracelet and everything is included, and the app works just fine that way.

Helpful?
Wendy August 29, 2026

Five days of battery

Five days without charging, that's really handy.

Helpful?
DawnVerified buyer August 29, 2026

My sleep stages

The app shows me my sleep stages and I understand better why I wake up around four in the morning.

Helpful?
SusanVerified buyer August 28, 2026

Gift for my sister

Gave it to my sister for her 60th, she was thrilled.

Helpful?
DonnaVerified buyer August 28, 2026

A gift from my husband

My husband gave it to me for our wedding anniversary. I haven't taken it off since, it's a really lovely gift.

Helpful?
BonnieVerified buyer August 28, 2026

The weekly trend

The blood pressure trend over the week is what I look at the most. It's not a medical measurement and I know that, but it gives me a general idea between two visits to my doctor.

Helpful?
LoriVerified buyer August 28, 2026

Just like the photos

Just like the pictures and the color is very pretty.

Helpful?
JulieVerified buyer August 28, 2026

Fast and well packed

Package came in three days, nicely packed in a little box. The app sets itself up, I had no trouble at all.

Helpful?
GinaVerified buyer August 28, 2026

Heart rate variability

I started looking at my heart rate variability, I didn't even know that was a thing before. Basically it goes up when I'm rested and down when I've had a long day. I show my husband the screen sometimes, so now we both talk about it.

Helpful?
DeniseVerified buyer August 28, 2026

Nice to keep track

Nice to follow my blood pressure trend week by week.

Helpful?
Karen F.Verified buyer August 28, 2026

Nothing like a sports watch

I was worried it would look like a sports watch on my wrist but not at all. It's thin, discreet, and it really looks like a regular bracelet. My coworker was surprised when I told her what it does.

Helpful?
KimberlyVerified buyer August 27, 2026

Passes for jewelry

A friend thought it was a designer bracelet when I wore it with my dress. Nobody guesses it's a smart tracker.

Helpful?
Karen R.Verified buyer August 27, 2026

Even thinner in person

It's really pretty, thinner than I expected.

Helpful?
Karen G.Verified buyer August 27, 2026

Goes with everything

It goes with everything, at the office and with jeans on the weekend. I think it looks elegant, not gadgety at all.

Helpful?
Karen N. August 27, 2026

Comfortable even at night

I usually sleep terribly with anything on my wrist and this one I keep on with no problem. It stays put, it doesn't spin around, and I wore it in the pool without thinking about it.

Helpful?
Karen B. August 27, 2026

People ask me about it a lot

People ask me where I got it a lot, it looks like jewelry.

Helpful?
Theresa August 26, 2026

My three a.m. wake-ups

I was waking up every night around three and I never knew why. Since I got it, I can see on the app exactly when it happens and it lines up with the nights I eat late. Nothing scientific on my end, but at least I have something to look at instead of just lying there wondering.

Helpful?
TammyVerified buyer August 26, 2026

The clasp holds well

The sliding clasp adjusts in two seconds and the band doesn't move all night. No complaints here.

Helpful?
KarenVerified buyer August 26, 2026

Nice finish

The color is really pretty and the finish looks nice.

Helpful?
StacyVerified buyer August 26, 2026

I moved my bedtime up

What I like is actually seeing my sleep the next morning. I realized I was going to bed too late so I moved it up by half an hour. My nights are longer since then.

Helpful?
Karen P.Verified buyer August 26, 2026

Worn day and night

I've worn it day and night for about ten days now and I forget it's on. No discomfort, even sleeping on my side.

Helpful?
LisaVerified buyer August 26, 2026

No irritation on my wrist

I don't feel it on my wrist at all, even at night.

Helpful?
Pamela August 26, 2026

I can finally see my sleep

I can finally see what my nights look like. The app shows the sleep stages and heart rate, it's clear and easy to read.

Helpful?
Karen A.Verified buyer August 26, 2026

Just as described and simple

Ordered on a Thursday, got it Monday, everything was just as described. The app installs in two minutes and it's easy to figure out. And no subscription, you pay once and that's it.

Helpful?
Karen L.Verified buyer August 26, 2026

Very light

Light, you forget it's there, and I wore it in the shower with no problem.

Helpful?
AmyVerified buyer August 25, 2026

A gift from my kids

My two kids went in on it together to give it to me this summer, they knew I wanted to track my sleep without wearing a big watch. I got it two weeks ago and I haven't taken it off since. The packaging was really pretty too, it felt like a real gift.

Helpful?
Karen V.Verified buyer August 25, 2026

Five days between charges

I get five days on a charge, I plug it in Sunday night and don't think about it again. And no subscription to pay, which is nice.

Helpful?
Karen D.Verified buyer August 25, 2026

A quick look in the morning

My sleep shows up every morning, it's become a habit now.

Helpful?
Karen Z.Verified buyer August 25, 2026

A trend day after day

My mother had high blood pressure so I pay attention to mine. Having a trend day after day isn't a diagnosis but it gives me a general idea and I'll bring it up with my doctor.

Helpful?
LauraVerified buyer August 25, 2026

A gift from my husband

My husband gave it to me for our wedding anniversary. I haven't taken it off since, it really was the gift I wanted.

Helpful?
Karen T.Verified buyer August 25, 2026

Fast shipping

Package came in three days, everything was packed well.

Helpful?
Karen S.Verified buyer August 25, 2026

Something for my checkup

I've been watching my blood pressure trend and my heart rate variability for two weeks. It gives me something to go on for my appointment.

Helpful?
Karen C. August 25, 2026

Great gift for my sister

Got it for my sister's 50th birthday, she loved it.

Helpful?
Karen K.Verified buyer August 25, 2026

Subtle and well made

I wanted something subtle and that's exactly what I got. The finish is really nice, it doesn't look like a gadget at all. I wear it with my other bracelets and it goes great with them.

Helpful?
JenniferVerified buyer August 25, 2026

The trend is enough for me

I'm 58 and I run a little high on blood pressure, so I wanted something I could wear without thinking about it. What I look at is the trend over the week, not the exact number, and that's enough to see whether I'm doing okay or not. My husband looks at his numbers with me in the evening.

Helpful?
Karen J.Verified buyer August 25, 2026

People ask me the brand

Three different people at work asked me where I bought my bracelet this week. Not one of them realized it was a tracker.

Helpful?
SandraVerified buyer August 25, 2026

My trend every morning

I look at my blood pressure trend every morning, it's reassuring.

Helpful?
Karen X.Verified buyer August 24, 2026

The clasp holds well

The sliding clasp is well designed, you adjust it in two seconds and then it stays put. I have small wrists and I was afraid it would spin around, but no, it stays in place all night.

Helpful?
Karen E.Verified buyer August 24, 2026

Nobody can tell

A coworker at the office thought it was a designer bracelet. I told her it records my sleep and she couldn't believe it.

Helpful?
Karen H.Verified buyer August 24, 2026

Prettier in person

Very happy with it, it's even prettier in person.

Helpful?
Debbie M.Verified buyer August 24, 2026

Holds up in the shower

In the shower every day and it's totally fine. Nice surprise, I expected something flimsy and it's actually solid.

Helpful?
Karen O. August 24, 2026

Looks like jewelry

It's really elegant, it looks like actual jewelry.

Helpful?
StephanieVerified buyer August 24, 2026

I go to bed earlier

What I found out with the app is that my late nights in front of the TV showed up right away on my deep sleep. So I started heading up to bed earlier and my nights are already better. It's a silly little thing but it actually got me to change a habit.

Helpful?
Debbie L.Verified buyer August 24, 2026

I finally see my nights

I've had it two weeks and I can finally see what my nights actually look like. I wake up around four in the morning a lot and I had no idea at all before.

Helpful?
Karen Q.Verified buyer August 23, 2026

Pretty color

The color is really pretty, even softer than in the photos.

Helpful?
DianeVerified buyer August 23, 2026

Little morning routine

Every morning I check my sleep with my coffee, it's become a little routine. I've realized I go to bed way too late.

Helpful?
Karen W.Verified buyer August 23, 2026

You don't feel it

I've worn it day and night for ten days, I don't even feel it.

Helpful?
Debbie T. August 23, 2026

Fast delivery, easy app

Package came in three days, nicely packed in its little box. The app sets up in two minutes, and I'm not techy at all but I managed it.

Helpful?
Debbie C.Verified buyer August 23, 2026

No subscription to pay

No monthly subscription to pay, that's what made up my mind. I was tired of apps that ask for a credit card after three days. Here you buy it once and that's it.

Helpful?
Karen Y. August 23, 2026

Very light on the wrist

Light, you totally forget it's on your wrist.

Helpful?
Debbie G.Verified buyer August 23, 2026

A gift from my daughter

My daughter gave it to me for my sixtieth birthday and I haven't taken it off since. She chose well, it's the kind of gift you're really happy to get.

Helpful?
Debbie P.Verified buyer August 23, 2026

Gave it to my sister

I bought it for my sister's birthday, she's a nurse and she runs around the hospital all day. She put it on right away and sent me a picture of her wrist that same evening. She never wanted a smartwatch and now she doesn't take this one off. Very happy with my choice.

Helpful?
Debbie B.Verified buyer August 22, 2026

No bother at night

It doesn't bother me at all at night, unlike my smartwatch.

Helpful?
Teresa August 22, 2026

Heart rate variability

Before this I didn't even know what heart rate variability was. Now I can see my number goes down on the days I'm stressed at work. It's interesting to keep an eye on.

Helpful?
Debbie V.Verified buyer August 22, 2026

A daily trend

I've been keeping an eye on my blood pressure for years and now I have a day to day trend. It doesn't replace my cuff but it gives me an idea.

Helpful?
Debbie D. August 22, 2026

Clear sleep stages

The app shows me my sleep stages and it's very clear.

Helpful?
Debbie F.Verified buyer August 22, 2026

Easier than taking my pulse

Since my last appointment I've been writing down my resting heart rate, and it's a lot easier with the bracelet than taking my pulse at my wrist.

Helpful?
Pam E.Verified buyer August 22, 2026

Doesn't look gimmicky

I was on the fence because smart devices usually look cheap. Honestly, this one looks like a bracelet from a jewelry store. My daughter saw it and had no idea it was connected until I explained.

Helpful?
NancyVerified buyer August 21, 2026

One charge a week

The battery lasts five days, I charge it once a week.

Helpful?
Sharon K.Verified buyer August 21, 2026

Subtle like I wanted

I wanted something subtle that doesn't look like a smartwatch, and this is exactly it. It goes with all my outfits.

Helpful?
Debbie S.Verified buyer August 21, 2026

Tracking it with my husband

My husband has high blood pressure and he's the one who pushed me to get it. The blood pressure trend over the week gives us something concrete to show the doctor next time. It's not a diagnosis, we know that, but it's still something.

Helpful?
HeatherVerified buyer August 21, 2026

Great birthday gift

My husband gave it to me for my birthday and I love it.

Helpful?
Carol J.Verified buyer August 21, 2026

I sleep with it just fine

Normally I can't stand anything on my wrist when I sleep. I kept this on the very first night and didn't feel a thing. It's thin and it doesn't catch on my sweater sleeves.

Helpful?
Cindy A.Verified buyer August 21, 2026

My sleep stages

The app shows me my sleep stages and what time I wake up during the night. I think it's interesting to look at in the morning.

Helpful?
Debbie N.Verified buyer August 21, 2026

Prettier in person

Even prettier in person than in the photos.

Helpful?
Angela D.Verified buyer August 21, 2026

Kept it on in the shower

I keep it on in the shower without thinking about it, no problem so far. The sliding clasp adjusts in two seconds.

Helpful?
Rhonda V.Verified buyer August 21, 2026

A trend that reassures me

For about ten days now I've been checking my resting heart rate and my heart rate variability. It's not a diagnosis and I'm not asking for that, but seeing a trend over several days reassures me.

Helpful?
Lisa R.Verified buyer August 21, 2026

Wear it day and night

I wear it day and night and I don't even feel it.

Helpful?
Beth Q.Verified buyer August 20, 2026

My mom loves it

I ordered it for my mom who is 63 and didn't want a smartwatch, she thought they were too technical and too ugly. She put this one on right away and hasn't taken it off since. We go over her sleep together on the phone on Sundays, it gives us something to talk about.

Helpful?
Laura B.Verified buyer August 20, 2026

Wrote it down before my appointment

I wrote down my blood pressure trend and my average heart rate before my appointment. It's an estimate, not a real reading, but it helps me get an idea.

Helpful?
Debbie H. August 20, 2026

Looks like real jewelry

It looks like a jewelry store bracelet, nobody guesses.

Helpful?
Stacy I.Verified buyer August 20, 2026

Set it up by myself

Everything is simple to set up, I did it by myself without calling my son. Sleep, heart rate and the trend are all on the same screen. And there's nothing to pay every month.

Helpful?
Denise F.Verified buyer August 20, 2026

Five days without charging

Five days of battery for me, I charge it Sunday night and don't think about it again. No subscription to pay either.

Helpful?
Susan P.Verified buyer August 20, 2026

Package came fast

Package came in three days and everything was packed well.

Helpful?
Christine O. August 20, 2026

A gift from my husband

My husband gave it to me for our wedding anniversary. I haven't taken it off since, he picked well.

Helpful?
Michelle T.Verified buyer August 20, 2026

Stays put at night

It doesn't move all night and the clasp holds well.

Helpful?
Tammy U. August 20, 2026

My wakeups at night

I often wake up around four and I thought I fell back asleep right away. Turns out no, the app shows I stay awake for a good while. At least now I know where the tiredness comes from.

Helpful?
Nancy Z. August 19, 2026

My blood pressure trend

My doctor asked me to keep an eye on my blood pressure. The bracelet doesn't really measure it, it's a trend, and the app explains that clearly. But seeing that trend over two weeks got me moving, I walk more in the evening now.

Helpful?
Wendy G.Verified buyer August 19, 2026

Shared with my daughter

I share my results with my daughter who is a nurse, she takes a look now and then. It reassures her and me too.

Helpful?
Donna C.Verified buyer August 19, 2026

My sleep every morning

Every morning with my coffee I check my sleep, it's become a habit.

Helpful?
Debbie Z.Verified buyer August 19, 2026

Nobody can tell

I've worn it to the office for about ten days now and nobody guessed it was a tracker. Two coworkers asked me where I bought it, they thought it was a bracelet from a jewelry store.

Helpful?
Kathy W. August 19, 2026

Compliment at work

A coworker asked me where I bought it.

Helpful?
Julie N.Verified buyer August 19, 2026

Late nights show up

When I go to bed late, you can see it right away the next day in the app. Now I understand better why some mornings are so rough.

Helpful?
Tracy L.Verified buyer August 19, 2026

Very light on the wrist

Very light, I completely forget it's on my wrist.

Helpful?
DeborahVerified buyer August 18, 2026

Goes with everything

It goes with everything, my work outfits and my weekend clothes. I think it looks really elegant.

Helpful?
Melissa Y.Verified buyer August 18, 2026

I wear it every day

Got it two weeks ago and I've worn it every day since, at the office and on the weekend. I got the silver one and it works just as well with a blouse as with a sweater. Two people complimented me on it thinking it was regular jewelry.

Helpful?
Debbie X.Verified buyer August 18, 2026

You forget it's there

You completely forget it's on your wrist, that's what I like. I've had smart watches before and I always ended up taking them off at night. This one I never take off.

Helpful?
Brenda S.Verified buyer August 18, 2026

Gift for my sister

Got it for my sister for her 55th birthday, she loved it.

Helpful?
Debbie J.Verified buyer August 18, 2026

Nice finish

The finish is really well done, no complaints at all. Nice surprise, I was expecting something flimsy and it's actually solid.

Helpful?
Debbie A.Verified buyer August 18, 2026

Even prettier in person

Very happy with my purchase, it's even prettier in person than in the photos.

Helpful?
Debbie K.Verified buyer August 18, 2026

Simple and discreet

Very discreet, it looks like a plain piece of jewelry. That's exactly what I was looking for, I didn't want a watch with a screen on my wrist.

Helpful?
Lisa M.Verified buyer August 18, 2026

I finally see my nights

I look at my sleep in the morning with my coffee, it's become a little habit. I figured out that I wake up a lot around four in the morning when I had no memory of it.

Helpful?
Debbie O. August 18, 2026

Gorgeous

Very happy, it's gorgeous. I really like the color a lot.

Helpful?
Debbie Q.Verified buyer August 18, 2026

The clasp holds well

The sliding clasp is really handy, I set it to my size the first day and it hasn't moved since. It stays put on my wrist even when I'm sleeping.

Helpful?
CarolVerified buyer August 18, 2026

For my appointment

I have an appointment with my doctor in two weeks and I wanted to come in with a little perspective on my sleep and my heart rate. Two weeks of data is already something concrete to show her, even though obviously she's the one who decides.

Helpful?
Debbie E.Verified buyer August 17, 2026

I don't even feel it

I've been wearing it day and night for two weeks, I don't even feel it.

Helpful?
Lisa D.Verified buyer August 17, 2026

Helpful for my wake-ups

My sleep has been broken up for a while now. In two weeks I saw that my worst nights are the ones where I eat late. That made me change two or three things and I'm already sleeping better.

Helpful?
Lisa B.Verified buyer August 17, 2026

My sleep stages

The app shows me my sleep stages, I find that interesting. Since I got it I've been going to bed a little earlier.

Helpful?
Debbie W.Verified buyer August 17, 2026

I keep it on in the shower

I keep it on in the shower without thinking about it, no issues. Really light.

Helpful?
Lisa L. August 17, 2026

Glad to see my nights

I mainly wanted to track my sleep and it does that well. The data is clear, you understand it right away.

Helpful?
JanetVerified buyer August 17, 2026

My blood pressure trend

I follow my blood pressure trend and it's reassuring to watch things change. It's not a medical measurement of course, it's just an indication, but it's already good for getting a sense day to day.

Helpful?
Debbie Y.Verified buyer August 17, 2026

No complaints

Light, doesn't squeeze, no complaints. I recommend it.

Helpful?
ReneeVerified buyer August 16, 2026

Package was well wrapped

Fast shipping and the bracelet matches the photos. The box was very well packed, that was nice to see.

Helpful?
Gail August 16, 2026

I share it with my daughter

My daughter lives far away and she worries about me now that I'm past sixty. We go over my numbers together on the phone on Sundays, it reassures her and me too. It's not a doctor but it gives us something concrete to talk about instead of just I'm fine.

Helpful?
Lisa C.Verified buyer August 16, 2026

Five days per charge

I charge it once during the week and that's it. Very convenient.

Helpful?
Marcia August 16, 2026

Heart rate variability

I mostly look at the heart rate variability, I didn't know about that number before. For ten days now I've seen it drop on the days I'm stressed at work, I think that says a lot.

Helpful?
Lisa G.Verified buyer August 16, 2026

No subscription

The app is easy to figure out, I had everything going in a few minutes. And no subscription to pay every month, that's what sold me.

Helpful?
Pam August 16, 2026

Gift from my daughter

My daughter gave it to me for my birthday and I haven't taken it off since.

Helpful?
LaurieVerified buyer August 16, 2026

Bought it for my sister

I ordered it for my sister and she was thrilled. She sent me a photo of it on her wrist that same night, it looks great on her.

Helpful?
Lisa V.Verified buyer August 16, 2026

So pretty

Very happy with it, even prettier in person.

Helpful?
Diane R.Verified buyer August 16, 2026

Even better in person

Nice surprise, it's even prettier in person than in the pictures. A coworker asked me where I got it on the very first day. It looks just as good with jeans as with something dressier.

Helpful?
MonicaVerified buyer August 15, 2026

Gift from my husband

My husband gave it to me for our wedding anniversary and I haven't taken it off since. I was expecting something pretty techy and it's really a piece of jewelry, simple and nicely made. My daughters already told me they want the same one for Christmas.

Helpful?
Lisa P.Verified buyer August 15, 2026

My husband chose well

My husband gave it to me last week. He wasn't sure what to get me and he chose really well, I've worn it every day since.

Helpful?
Lisa S.Verified buyer August 15, 2026

I never take it off

I never take it off, not even to sleep or shower.

Helpful?
ShannonVerified buyer August 15, 2026

Comfortable day and night

I've had it on day and night for about ten days and I don't even feel it. The sliding clasp adjusts in a second, it stays put on my wrist without being tight.

Helpful?
Lisa O.Verified buyer August 15, 2026

Looks like real jewelry

I got it last week and honestly it looks like real jewelry. Nobody has guessed that it's a smart bracelet.

Helpful?
Lisa F.Verified buyer August 15, 2026

Simple and clear

I check my sleep every morning, it's simple and clear.

Helpful?
Lisa E.Verified buyer August 14, 2026

The clasp is handy

The sliding clasp is really handy, I sized it to my wrist in a minute and it doesn't move all day.

Helpful?
Lisa N.Verified buyer August 14, 2026

Fast shipping

Well packaged and here in two days. No complaints.

Helpful?
NicoleVerified buyer August 14, 2026

I can see my nights

I can finally see what my nights actually look like. The app shows the stages and the wake ups, and it matches how I feel in the morning. Really happy with this purchase.

Helpful?
Diane D. August 14, 2026

Good for tracking my blood pressure

I get checked regularly for my blood pressure and I like having a day to day trend between appointments. I know it isn't a medical device, but seeing how the week is going puts my mind at ease. I showed the charts to my doctor and she thought it was interesting.

Helpful?
Lisa A.Verified buyer August 14, 2026

Gift from my daughter

My daughter gave it to me for my 58th, I love it.

Helpful?
Lisa Q.Verified buyer August 14, 2026

Simple app

The app is simple, I look at my sleep stages in the morning with my coffee. I recommend it.

Helpful?
Diane B. August 14, 2026

Got one for my mom too

My mom has high blood pressure so I got her the same one. We look at the trend together on Sundays. It isn't a medical reading but it gives us an idea between her appointments with the doctor.

Helpful?
Lisa Z. August 14, 2026

Goes with everything

It goes with everything, I even wear it to work.

Helpful?
Lisa W.Verified buyer August 14, 2026

Nice for keeping track

I keep an eye on my blood pressure trend to bring it up with my doctor at my next visit. Happy with this purchase.

Helpful?
Lisa H.Verified buyer August 14, 2026

Very light

Very light, I completely forget it's on my wrist.

Helpful?
PaulaVerified buyer August 13, 2026

Bought it for my sister

Bought it for my sister who loves jewelry. She put it on right away and sent me a picture that same night.

Helpful?
Diane L.Verified buyer August 13, 2026

Here in two days

Ordered on a Monday, here Wednesday in a nice little box. The app connected on the first try and the charge easily lasts five days. No complaints about this purchase.

Helpful?
Diane T.Verified buyer August 13, 2026

I know myself better

I've been wearing it for two weeks and what I look at most is the heart rate variability and my resting heart rate. On days when I sleep badly you can see it right away in the app. It doesn't replace my doctor of course, but it helps me know myself better.

Helpful?
Lisa J.Verified buyer August 13, 2026

Nice finish

Beautiful bracelet, the finish is really nice.

Helpful?
Lisa X.Verified buyer August 13, 2026

No subscription

Five days of battery without thinking about it and no subscription to pay, that's what sold me. Very satisfied.

Helpful?
Lisa K. August 13, 2026

Good for sleep

I understand my nights better since I started wearing it.

Helpful?
Lisa Y. August 13, 2026

Discreet and elegant

The silver color is very pretty and understated. It really looks like a bracelet from a jewelry store, not a smartwatch.

Helpful?
Diane V.Verified buyer August 13, 2026

I can finally see my nights

I look at my sleep stages in the app in the morning and it's really interesting. I had a feeling I slept badly but now I can see it in black and white. I check it with my coffee every morning since I got it.

Helpful?
Diane C.Verified buyer August 12, 2026

So pretty

Very happy with it, it looks even nicer in person than in the photos.

Helpful?
Diane M.Verified buyer August 12, 2026

I keep it on all the time

I keep it on in the shower with no problem and I wear it at night. After a few days you don't feel it at all.

Helpful?
Diane N.Verified buyer August 12, 2026

For my appointment

I have a checkup with my primary care doctor next month and I wanted to come in with something concrete. The blood pressure trend and the heart rate variability are logged every day in the app, so it gives me an idea of how I'm doing between visits. I'm happy with my purchase.

Helpful?
Diane P.Verified buyer August 12, 2026

I don't even feel it

I've worn it day and night for about ten days now and I don't even feel it on my wrist.

Helpful?
Diane O.Verified buyer August 12, 2026

I get my wake ups now

I was waking up around four in the morning a lot without knowing why. For the last two weeks I can see in the app when it happens and I'm starting to connect it to staying up too late.

Helpful?
Diane G.Verified buyer August 11, 2026

Looks like jewelry

It really looks like something from a jewelry store, nobody can tell it's a smart one. I wear it with my watch and they go together great.

Helpful?
Diane A.Verified buyer August 11, 2026

No complaints

It clasps well and it doesn't move at night. No complaints.

Helpful?
Diane S.Verified buyer August 11, 2026

Got here fast

Package showed up in three days, packed well. The bracelet matches the description, I recommend it.

Helpful?
Diane E.Verified buyer August 11, 2026

Bought it for my mom

I ordered it for my mom, she's 68 and she loves it. She's not one for electronic gadgets but she thinks this one is pretty and she wears it every day. Good gift.

Helpful?
Diane J. August 11, 2026

Gorgeous

Very happy, it's gorgeous.

Helpful?
Diane F.Verified buyer August 11, 2026

Gift from my daughter

My daughter gave it to me for my birthday and I haven't taken it off since. Really good idea on her part.

Helpful?
Kathy T. August 11, 2026

Something to go on

I wrote down my blood pressure trend and my resting heart rate for two weeks. I'm going to show all of it to my doctor in September and see what he thinks. It doesn't replace anything but at least I show up with something instead of just impressions.

Helpful?
KimVerified buyer August 11, 2026

Shower is no problem

I keep it on in the shower, no problem at all. Nice not to have to think about it.

Helpful?
Diane W.Verified buyer August 11, 2026

My husband looks too

My husband checks my blood pressure trend with me at night, we compare our numbers. It's not a diagnosis of course, it's just a trend, but it gets us talking about our habits and that's already something.

Helpful?
Diane Z.Verified buyer August 10, 2026

Goes with everything

I wear it to the office and on weekends, it goes with everything. Simple and elegant, two compliments already.

Helpful?
Diane Q.Verified buyer August 10, 2026

Nice surprise

I was expecting something flimsy and it's really solid. Nice surprise.

Helpful?
Diane H.Verified buyer August 10, 2026

Good battery life

I charge it once during the week and that's it. No subscription to pay either, that's a change from the others.

Helpful?
Diane X.Verified buyer August 10, 2026

The clasp is well done

The sliding clasp adjusts in two seconds and it holds perfectly without being tight.

Helpful?
Diane Y.Verified buyer August 10, 2026

Nice finish

The finish is really clean, there's no edge that catches on anything. The color is exactly like the photo, a very light gray that looks classy. I don't regret buying it.

Helpful?
Kathy C. August 10, 2026

I check my sleep in the morning

I got the bracelet ten days ago and I've worn it nonstop since. In the morning I take a quick look at my night before I leave for work, it takes thirty seconds. I'm starting to see that the nights I eat dinner late, I sleep worse. Very satisfied.

Helpful?
Kathy M. August 10, 2026

Simple app

The app is simple, everything is on a single page. I'm not good with phones and I'm getting along with it just fine.

Helpful?
Kathy B.Verified buyer August 10, 2026

A gift from my sister

My sister gave it to me and I would have bought it myself. Very pretty.

Helpful?
Kathy D.Verified buyer August 10, 2026

My nights make more sense

For the past two weeks I've looked at my nights every morning. Deep sleep, light sleep, it's all broken down and easy to read. I figured out that I go to bed too late.

Helpful?
Kathy R.Verified buyer August 10, 2026

My heart rate variability

I mostly look at the heart rate variability, my physical therapist had mentioned it and now I can finally see mine. It goes up on the days I walk.

Helpful?
Kathy L.Verified buyer August 10, 2026

Discreet

Nobody can tell it's a smart device, people think it's just a plain bangle.

Helpful?

Also from Fitmo

There's one for him, too.

The Vitro is the other Fitmo band. Same idea, no screen and no subscription, in a build made for a man's wrist. It's the one people buy for a husband or a dad.

FITMO15 15% off the Vitro Applied automatically when you click Apply
Vitro, the Fitmo smart band, in black, silver and champagne gold Meet Vitro

Frequently asked questions

No, and that's the whole point. Tetra has no screen. Nothing lights up, nothing buzzes, nothing grades you in the morning.

It's a jeweled band, with a crystal-set bar and a fine chain. In a meeting, at dinner, in front of your kids, nobody can tell you're tracking anything. Only you know.

Continuously, day and night:

  • Heart rate (min, average, max)
  • Heart rate variability (HRV)
  • Blood oxygen (SpO2)
  • Stress level
  • Blood pressure trends (observational, not medical)
  • Detailed sleep: duration, efficiency, deep, light and REM stages
  • Physical recovery score
  • Physical and mental readiness score
  • Activity: steps, distance, calories burned
  • Cycle tracking

You don't enter anything. You wear it, it records.

Yes, and every day of the year. Tetra isn't a ring or a rigid bangle: it's a band with an adjustable sliding clasp.

Your wrists aren't the same size depending on heat, water retention, hormones or the time of the month. A fixed size, picked on one given day, never works every day. The slider adjusts in a second, without you thinking about it.

One size, every wrist.

No. That's a design decision.

Tetra has no screen, so it can't show you anything, remind you of anything, or hold anything against you. It records, and you decide when you open the app.

If you'd rather it watch certain numbers automatically, that feature is in the app and you turn it on yourself. It's off by default.

Yes. The app lets you add someone and share your health and activity data, in either direction.

In practice, a daughter can follow her mother's numbers, a spouse can follow their partner's. Sharing works by invitation, and it stops the moment you decide.

It's the feature most people pick when they buy Tetra as a gift rather than for themselves.

No, never. You buy the band once, and you get every feature and all of your data for life through the free app.

No hidden fees, no monthly charge, no feature locked behind a paywall. Your data belongs to you.

For comparison, a leading smart ring runs about €349 plus €5.99 a month. Over three years, that's about €565.

Yes. Tetra is water resistant to 10 ATM, tested to roughly 330 feet. Shower, pool, swimming, no problem.

Like any piece of jewelry, rinse it with clean water and dry it after the pool or salt water. It keeps the finish bright over time.

  • 5 days of battery depending on how you use it
  • Full charge in about 2 hours with the magnetic cable included

The easiest thing is to charge it while you shower or get ready. Two hours is enough, and you don't miss a single night, which is exactly when it does the most work.

Yes. Every morning, the app turns your data into a plain reading, with concrete recommendations instead of a wall of graphs.

It also includes sleep support: an analysis of your night, suggestions, and a library of sounds to fall asleep to.

And daily goals you set yourself, if you want them.

Tetra works with:

iOS

  • iOS 11.0 and up

Android

  • Android 6.0 and up

Syncing happens over Bluetooth with the free app, on the App Store and Google Play. If your phone isn't nearby, the band keeps recording on its own and your data syncs the moment you reconnect.

No. Tetra gives you estimates and trends to watch over time, so you walk into your appointments with more to go on.

That's exactly where it helps: between two visits, nobody is watching. You show up with readings instead of a feeling. The interpretation and the conclusion stay with your doctor.

You get 30 days to try your Tetra, no strings attached. If it's not for you, send it back and we refund you in full, no questions asked.

Thirty days is also how long it takes for your first trends to show up. It's enough time to judge it, not just to make up your mind.

Yes. Fitmo is a French company, and your data is:

  • Encrypted end to end
  • Hosted on European servers under GDPR
  • Accessible only by you, or the people you authorize

We never sell your data and we don't share it with any commercial third party. You stay in full control at every step, and you can delete everything permanently from the app at any time.

Tetra
Tetra €229,00€279,00