O Ring

$239.99
$199.99
O Ring

A lightweight titanium smart ring made for all-day, every-night comfort. It tracks your sleep, heart rate, stress, activity, and cycle patterns—then translates your body’s signals into simple, meaningful insights - No subscription, just insight.

Your Body Speaks. We Listen.

Two people playing dominoes with o ring on their hands.

O Ring

24/7 Unobtrusive Sensing – Measures stress, sleep, heart rate & SpO2 without asking.

Worn Daily, Felt Rarely.

O Ring is built to disappear into daily life — light enough for sleep, durable enough for workouts.

  • 24/7 Wearing Comfort
  • Lightweight Titanium Build
  • Smart Sensing Technology

What O Ring Does

The man was covering his head with his hands, seemingly under great pressure; he had O-rings on his fingers.

Technical Specifications

What is included:

Sensors
Sensors
PPG + Temp + Accel
Battery Life
Battery Life
5 - 8 Days
Charging Time
Charging Time
2 Hours
Materials
Materials
Titanium alloy
Weight
Weight
3.1 g to 3.59 g
Thickness
Thickness
4 mm
Connectivity
Connectivity
Bluetooth
Compatibility
Compatibility
iOS & Android

Ova Health Insight

  • Turning your body signals, daily rhythms, and reflections into clear insights about your current state.

Download opove app

Frequently Asked Questions

What does O Ring track

Sleep
Stress(HRV)
Heart Rate
Blood Oxygen
Fingertip Temperature
Activity: Daily steps and multiple sports
Women's Health: Cycle insights and fertile window

How do I find my correct size?

To find your perfect O Ring size, we recommend ordering our $1.5 Sizing Kit—this fee will be deducted from your final purchase as a discount. The kit includes eight test rings (sizes 6-13), wear the appropriate size for 24 hours to account for natural finger size fluctuations throughout the day, then choose the size that feels snug but not tight and doesn't shift when you move.

If you prefer to measure manually, you can refer to our size guide for instructions.

How to wear the O Ring correctly?

For optimal performance and accuracy, it is recommended to wear the ring on the index finger of your non-dominant hand. You can also wear it on the middle or ring finger if preferred. When worn, the logo should be on the palm side. The O Ring should fit snugly against the skin at the base of the finger.

Does the opove app require a monthly subscription?

No, the opove app has no subscription fees and no hidden costs.

Sleep tracking, stress monitoring, heart rate tracking, women's health tracking, and all historical trend data are included from day one.

Can I wear the ring while showering?

Yes. The ring is water-resistant to 5 ATM. However, please avoid using it in water with complex compositions (such as hot springs or seawater) to prevent potential corrosion.

  • More accurate. The battery life is way way better.
  • So light that I forget I have it on after a few minutes.
  • Battery life is amazing, lasting a full week on one charge, no frequent recharging needed.
  • 5 stars: 29 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
Debra H.

I have purchased four different smart rings. From 50 to 200. You get what you pay for. The lower priced ones were adequate, but this one is different. I feel it is more accurate. The battery life is way way better.

N
Neat S.S.

Great value for the money. Love using it to track my sleep. I also love the look of it!

T
TT
Comfortable, Discreet Fitness Tracking with Solid Everyday Performance

After getting tired of bulky fitness trackers, I switched to this smart ring and it's been much more comfortable for daily use. It's lightweight and smooth, so I barely notice it during the day or while sleeping. The setup with my phone was simple, and it syncs reliably with both Android and iOS.

It tracks basics like steps, heart rate, sleep, and stress, and the data seems fairly consistent for everyday monitoring. Battery life is close to the advertised range. I get about 5-6 days per charge. The women's health tracking is a helpful extra feature.

It's not as detailed as high end smartwatches, but that's expected at this size. Overall, a convenient and discreet option if you want simple health tracking without wearing a watch.

k
kaopu
like it

I've been using this smart ring daily to monitor my activity and sleep, and it's surprisingly powerful for such a small device.
It tracks my heart rate, sleep quality, and stress levels accurately, giving me helpful insights into my overall health.
I especially like the women's health tracking feature, which adds an extra layer of convenience in one compact wearable.
The ring is lightweight and comfortable, so I can wear it all day and night without even noticing it.
With no subscription required and compatibility with both Android and iOS, this fitness ring is a stylish and practical health companion--highly recommended!

A
Amazon c.
A Ring That Knows More Than It Shows

At first glance, this smart ring looks simple, but it quietly tracks more than you would expect. I wore it daily, including during sleep, and it stayed comfortable without getting in the way. In a Haitian household where health is often managed through awareness and routine, having something that tracks sleep and stress felt helpful. The data is easy to understand and gives a clear picture of daily habits.

Battery life holds up well, so you are not constantly charging it. The lack of subscription is a nice bonus, since everything works right out of the box. It is not as detailed as some larger fitness devices, but it covers the essentials nicely. For something so small, it does a reliable job and fits easily into everyday life without demanding attention.

K
Krista
simple tool for better focus and calm

This morning I put on the O Ring and spent the day in a series of office meetings. At first, I barely noticed it quietly tracking my stress levels. Around 10:30, it gently vibrated, showing my HRV data indicated a slight rise in stress. Checking the app, I saw my heartbeat trends clearly and took a short break to stretch and breathe. At lunch on the office balcony, the ring reminded me again to pause. I followed the app's breathing guidance for five minutes, and my shoulders and neck felt much lighter afterward. In the afternoon meetings, I almost forgot I was wearing it, yet it continued monitoring and provided hourly updates on stress trends and recovery tips. On the commute home, I reviewed the day's insights. Stress peaks appeared mostly in the morning and around three in the afternoon. The ring suggested brief walks or breaks at those times. This small companion helped me feel more in control of my body and mind without extra tracking, quietly supporting a calmer and more balanced day.

A
AZ
A Ring That Knows More About My Sleep Than I Do

Wearing this feels like having a quiet observer tracking daily habits. It is lightweight and comfortable enough to forget you are wearing it. The data tracking is detailed, covering sleep, heart rate, and stress levels. Syncing with the app is smooth, and the information is easy to understand. Battery life lasts several days, which is convenient. It is not always perfectly accurate, but it gives a helpful overview of patterns. A simple way to stay more aware of your daily habits without much effort.

A
Amazon B.
Light enough to forget I am wearing it

I have tried several fitness trackers over the years but I always ended up taking them off because they felt bulky on my wrist. This ring is different. It is so light that I forget I have it on after a few minutes. The band is smooth and does not leave any marks on my finger. It tracks my sleep and stress levels without me having to do anything. The heart rate monitoring seems accurate compared to my chest strap.

I also like that it tracks women's health which is not something most fitness rings include. The battery lasts me about six days on a full charge. The charging case is small and easy to pack for trips. The data shows up clearly in the app without too much clutter.

K
Kelly
All-Day Wellness Tracking with Zero Burden!

Wearing it for a week feels totally effortless - sleek, lightweight, and stays secure during handwashing and workouts, way more comfortable than a smartwatch. Sleep, heart rate, and stress tracking are accurate, letting me see my body status clearly and adjust my routine. Battery life is amazing, lasting a full week on one charge, no frequent recharging needed. Simple operation, smooth app sync, clear data, and great for women's health management, a 24/7 personal wellness companion.

J
Jeff
like it

I started wearing this smart ring to track my sleep and daily activity, and it has quickly become part of my everyday routine.
I wear it all day at work and overnight, and it's so lightweight and comfortable that I barely notice it's there.
As someone who tracks women's health, I appreciate having those insights all in one place, which makes it easy to stay consistent.
The battery life is great - I only need to charge it about once a week, which is super convenient.
It syncs smoothly with my phone, and the data is easy to read and understand.
I've even worn it while traveling and doing yoga, and it keeps up perfectly with my lifestyle.

N
Nancy
Good looking and functional

I like the look of the smart ring. Some others look just too bulky but this one is thinner and delicate. The size should be same as regular ring size, and it fits my finger perfectly. I can monitor my health and sleep pattern from the app. Battery life is also impressive, which only needs weekly charging so far.

E
Ethan
Silver Advanced Texture, Practical Health Monitoring

Unboxed the opove O Ring, the 9 silver one has a high-end texture - metal glow is subtle, not flashy. Packaging is a high gift box, nice for gifting or personal use. Fits my ring finger (medium size) perfectly, not tight or loose, comfy enough to sleep in.

Health monitoring is accurate: sleep stages (deep/light) match my smartwatch, heart rate stays steady at rest and spikes during workouts. Connects to iOS smoothly, data syncs fast, shows weekly trends. Battery lasts ~7 days, used it a few days, drain is slow. Design is simple, silver goes with both formal and casual outfits, not clunky like some wearables.

Quality? feels solid, no burrs, no scratches after a few days. Good for daily monitoring without a bulky band.

J
Jumeirah
This Smart Ring Tracks My Busy Days Without Feeling Bulky

Ay, I tried this silver smart ring in size 6 because I wanted something discreet to monitor sleep and activity without wearing a big watch during shifts at the cafe. It sits comfortable on my finger all day and night, tracking heart rate, stress, and even women's health cycles through the app. The battery lasts up to a week, so I charge it while getting ready in the morning. The titanium feel is lightweight and does not snag on gloves or jewelry.
After a stressful week helping with my sister's wedding plans, the ring showed me how little deep sleep I was getting. I laughed when the app suggested more rest like my mom always does. It helped me adjust my evening routine with better wind-down time. The activity tracking motivates me to walk more along the boardwalk, and the data is easy to read without overwhelming charts. It syncs well with both Android and iOS, though the app could explain some metrics simpler. For continuous wear and practical insights into daily health, it has been a steady companion that does not get in the way. No more guessing why I feel tired. This ring quietly supports my busy lifestyle with useful info.

A
Alex W.
A Discreet and Powerful Wellness Companion

This smart ring is an impressive combination of comfort, functionality, and style. The titanium alloy build is incredibly lightweight, making it barely noticeable on my finger even during sleep or workouts. The sizing kit helped me find the perfect fit, and after 24 hours of testing, it's remained comfortable for all-day wear. The battery life is outstanding, lasting a full week on a single charge which is perfect for my busy lifestyle. I love how it tracks my sleep patterns with surprising accuracy, providing insights that have helped me improve my rest without being intrusive. The stress monitoring feature gives me gentle reminders to take breaks when needed, and the activity tracking keeps me motivated during workouts. The ring syncs seamlessly with both my Android and iOS devices, and the data is always accurate and easy to understand. The discreet design means I can wear it anywhere without drawing attention, yet it still provides comprehensive wellness tracking. The water-resistant build gives me confidence wearing it during workouts or even in the shower. It's become an essential part of my daily routine, helping me stay on top of my health and fitness goals without any hassle.

H
Harry
simple way to stay active

With the O Ring on, I head out for my walk. Today, I went to the nearby park for a 30-minute brisk walk. The ring instantly tracked my steps, distance, and calories burned. As I walked along the path, I glanced at the three-ring display: the outer ring for steps, the middle for distance, and the inner for calories. Watching each ring gradually fill gave me a small sense of accomplishment and kept me motivated throughout. After the walk, I spent 15 minutes stretching and doing a few yoga poses. The ring recorded these movements as well, giving a clear picture of total activity and energy spent. At the end of the session, it provided a summary showing steps taken, kilometers walked, and calories burned. Seeing all the numbers together made me feel productive and encouraged me to stay active. Later, while sitting at my desk, the ring continued tracking my remaining steps. It offered gentle nudges to move or stretch, helping me avoid long periods of inactivity. In the evening, checking the weekly trends in the app helped me plan workouts more effectively and maintain steady progress toward my activity goals.

A
Amazon C.
I don't have to pay attention to it while running.

When I go out for a run, I basically don't have to pay attention to this fitness ring just wear it. Steps, distance, and calories are tracked automatically, without any interruptions or screen lights. The rhythm stays continuous, and if I remember to glance at it while running, it has already recorded quite a bit. After finishing and catching my breath, I can check my phone and see all the data for the session.

S
Slomo C.
All-day wellness helper that's gentle on your finger

I used their sizing kit first and wore it for 24 hours to pick the best fit, and it's been super comfy ever since. This ring quietly watches over my body all day, letting me know when I'm feeling stressed and how to calm down. It also tracks my sleep nicely, so I can tell if I'm resting well each night. It counts my steps and daily movement in a simple way, no confusing numbers at all. The women's health features are really thoughtful, helping track cycles privately without any hassle. It connects easily to my phone, shows data in a clear way, and lasts a long time on one charge. It's small, stylish, and doesn't get in the way of daily life at all.

A
Andrew
A quick glance in the morning when I wake up.

Wearing this smart ring to sleep is really convenient. When I wake up the next day and open my phone, the sleep records are already there. Deep sleep, light sleep, and REM are all detailed, not just a rough estimate, so it's easier to understand how well I actually slept the night before. Sometimes I feel like I slept a long time, but the records show that the truly stable sleep was less. It tracks changes throughout the night, so a quick glance in the morning gives me a clear idea.

D
Davis
I don't have to take it off even when I'm sweating.

When I'm working out and sweating a lot, the waterproof feature of this smart ring is really convenient, I don't need to take it off midway. While running or doing cardio, my hands still feel clean and it doesn't get slippery. Even after wearing it for a long time, there's no pressure feeling, and the whole workout feels continuous. After finishing, I can wash my hands without taking it off, I just keep wearing it the whole time.

C
Celeste
It moves even without intentional exercise.

This smart ring is actually more useful when I'm not exercising specifically. Even when I just go out for a walk or to buy something, it records everything. The three ring goal progresses bit by bit, which feels smooth and doesn't create any pressure. I don't deliberately try to boost the numbers, it just tracks my everyday movement naturally. When I get home and sit down, I take a quick glance and roughly know where I stand.

J
Jason
Easy-to-Use Ring

I rely primarily on this device to track my sleep, heart rate, and daily activity. I simply wear the ring as usual, and it continuously records data in the background. By opening the mobile app, I can view clear and detailed insights into my sleep patterns.
Through this, I have discovered certain patterns within my daily routine. The quality of my sleep on some nights is noticeably superior to that of others, and the heart rate tracking feature performs with consistent reliability. Whether I check the data during the day or after engaging in light physical activity, the readings remain stable and consistent.
The connection between the ring and my smartphone operates seamlessly. Once paired, the data synchronization process is completely smooth and effortless. I simply open the app, and all my data is instantly displayed before my eyes - without the need for repeated reconnection attempts.

A
A.J
Great addition for my daily routine!

The Ring Smart Ring in Silver is a convenient and easy-to-use fitness tracker that has been a great addition to my daily routine. Setting it up with my phone was simple, and it seamlessly syncs with both Android and iOS devices. This smart ring helps me keep track of my sleeping patterns, heart rate, stress levels, and women's health, providing valuable insights into my overall well-being. It's a very useful gadget, and I find it comfortable to wear throughout the day. With up to 7 days of battery life, it works great for me and adds a touch of style with its sleek design.

w
wmls
Stylish and practical to wear.

This smart ring is perfect for people like me who don't want to be tied down by devices. It's very discreet; it doesn't get in the way when typing, using my phone, or doing housework, and I don't constantly notice it on my wrist, yet it still tracks my schedule and activity level.

Pairing was smooth from the start, and once connected to my phone, I basically don't need to worry about it anymore. I just go about my normal life each day, checking the app in the evening to see the data, like sleep or activity levels, to get a general idea of my status. Sometimes seeing the data reminds me to get some rest, which is a small form of self management.

The battery life is also good; I love that I don't need to charge it every day. It only needs charging every few days, so it doesn't disrupt my routine. After wearing it for a while, it's become a habit, and I feel like something's missing if I don't wear it. Overall, it's very easy to use, requiring no time for figuring out or adjusting.

E
Everyday S.
Light ring that blends into daily tracking

Slides onto the finger before heading out, then gets rotated slightly until the inner edge sits flat without shifting around. Later in the day, a quick glance at the app shows steps and heart rate already logged without needing to press anything, and the ring stays on through hand washing without being taken off. Before bed, it gets adjusted once more to a tighter position so it doesn't move overnight, then checked again in the morning where sleep segments and timing are already recorded. The surface feels smooth and doesn't snag during regular use, though sizing takes a bit of trial since it fits differently than standard rings. Battery holds through daily wear without needing constant attention, and nothing interrupts the routine once it's on. Ends up becoming part of the day without much thought after the first couple of uses.

J
Jason t.
comfort all day

Wearing the O Ring throughout the day has been surprisingly comfortable. The titanium alloy feels light on my finger, and I often forget it is even there. It stays in place perfectly while I type, cook, or exercise, so I never have to adjust it constantly. I especially value how it tracks health data quietly in the background. Heart rate, stress levels, and activity are recorded continuously without any interruption. Checking the app in the evening gives me a clear picture of how my body responded during the day, and the information feels personal and informative rather than overwhelming. Charging is simple and infrequent. With up to seven days of battery life, I can focus on my day without worrying about the ring running out of power. Even after showers and handwashing, it continues to function flawlessly, which adds to the comfort of wearing it day and night. The O Ring blends seamlessly into daily life. Its design and performance make it easy to keep health tracking in view without feeling heavy or intrusive. Wearing it has become part of my day naturally, and I find the experience smooth and unobtrusive.

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