back to shop
Choose Your Model
Choose Your Size
Purchase with Sizing Kit
Buy with Sizing Kit
7
8
9
10
11
12
13
Pick my Size
6
7
8
9
10
11
12
13
Extra Cable
Add an extra cable for your ring
Extra charger
Add a second charger
Insurance
Priority shipping,
support & replacement
14 Day Return Period
Secure Checkout
Worldwide Shipping
Delivery timeline
Now ships in under 2 weeks ! 🚀
Features
Heart rate tracking
24/7 heart rate & morning resting heart rate.
Breathing rate
Breathing rate during sleep periods.
Temperature
Temperature variations trends help detect fever, menstrual cycles…
Blood oxygenation
Medical grade SpO2 levels during sleep & rest periods.
HRV
Heart rate variability
One of the most important metrics for wellness and recovery monitoring.
Live measurement
On-demand spot measurement for HR, SpO2, HRV, activity intensities, and Max HR.
Alarm clock
Wakes you up with vibrations. Also with smart alarm during your lightest sleep stage.
24/7 Activity tracking
Automatically tracks your physical activities and provides recommendations for improvement.
Sleep tracking
Automatically monitors your core sleep and naps to give recommendations on how to improve them.
Launch guided breathing exercises through the ring's vibration to relax, sleep better and more.
Timer
Make the ring vibrate after a specified delay.
Airplane mode
Disable all ring's communication.
Recommendations
Personal, insightful and actionnable wellness recommendations to make sense of your data.
Stress
Live stress score feedback and stress predictions based on your activities.
Get notified when you vitals are going off.
Energy monitoring
Get stats and in depth insights about your energy levels.
Medication
Never forget to take your meds with vibration reminders.
Sport tracking
Track outdoor activities with a GPS trace and reports.
Advanced analytics
Make graphs overlap and understand how different metrics are linked.
Heart rate tracking
24/7 heart rate & morning resting heart rate.
Breathing rate
Breathing rate during sleep periods.
Temperature
Temperature variations trends help detect fever, menstrual cycles…
Blood oxygenation
Medical grade SpO2 levels during sleep & rest periods.
HRV
Heart rate variability
One of the most important metrics for wellness and recovery monitoring.
Live measurement
On-demand spot measurement for HR, SpO2, HRV, activity intensities, and Max HR.
Alarm clock
Wakes you up with vibrations. Also with smart alarm during your lightest sleep stage.
24/7 Activity tracking
Automatically tracks your physical activities and provides recommendations for improvement.
Sleep tracking
Automatically monitors your core sleep and naps to give recommendations on how to improve them.
Guided breathing
Launch guided breathing exercises through the ring's vibration to relax, sleep better and more.
Timer
Make the ring vibrate after a specified delay.
Airplane mode
Disable heavy ring's communication.
Recommendations
Personal, insightful and actionnable wellness recommendations to make sense of your data.
Stress
Personal, insightful and actionnable wellness recommendations to make sense of your data.
Vital alers
Get notified when you vitals are going off.
Energy monitoring
Get stats and in depth insights about your energy levels.
Medication
Never forget to take your meds with vibration reminders.
Sport tracking
Track outdoor activities with a GPS trace and reports.
Advanced analytics
Make graphs overlap and understand how different metrics are linked.
What's in the box?
Circular Slim
Charger
Technical specifications
Only 2 grams. Lighter than a standard ring.
Comes with a portable charger.
Up to 5 days of battery life.
Only 2 grams. 30x lighter than a smartwatch.
Comes with a portable charger.
Up to 5 days of battery life.
Android and Apple compatible.
1 year warranty.
Forged in Mordor. Design & Assembled in France.
Android and Apple compatible.
Forged in Mordor. Designed & Assembled in France.
1 year warranty.
Sensors
1 infrared LED sensor
1 red LED sensor
1 green LED sensor
3 axis accelerometer
1 surface temperature sensor
Sensors
1 infrared LED sensor
1 red LED sensor
1 green LED sensor
3 axis accelerometer
1 surface temperature sensor
Active Feedback*
A powerful vibration motor
A reactive button (activated with a tap)
*only for Slim ring with vibration option
Active Feedback*
A powerful vibration motor
A reactive button (activated with a tap)
*only for Slim ring with vibration option
Materials
Exterior: High grade alloy of matte black bead blasted aluminium and carbon fiber
Interior: Medical grade non allergenic, non metallic and comfortable inner material
Materials
Exterior: High grade alloy of stainless steel and carbon fiber with coating
Interior: Medical grade non allergenic, non metallic and comfortable inner material
Weight & Dimensions
Width: 8.8 mm
Thickness: 2.2 mm
Weight: 2 grams
Weight & Dimensions
Width: 8.8 mm
Thickness: 2.2 mm
Weight: 2 grams
Sizing
Available in 8 sizes: From US 6 to US 13
Circular ring sizes fit just like regular rings sizes
You can easily find your size with the Circular Sizing Guide or 3D rings that you can print!
Sizing
Available in 8 sizes: From US 6 to US 13
Circular ring sizes fit just like regular rings sizes
You can easily find your size with the Circular Sizing Guide or 3D rings that you can print!
Waterproof
IP68 grade: the ring can be immersed in 5 meters of water for a maximum of 30 minutes. It is not recommended for use in salted water.
Waterproof
IP68 grade: the ring can be immersed in 1.5 meters of water for a maximum of 30 minutes. It is not recommended for use in salted water.
Battery & Power
Battery life; Up to 5 days
Full charge in 45 minutes
Charger voltage: 5.5V
Battery & Power
Battery life; Up to 5 days
Full charge in 45 minutes
Charger voltage: 5.5V
Memory
Up to 20 days of data
Memory
Up to 20 days of data
Connectivity
Bluetooth Smart® (Low Energy)
Airplane mode
Connectivity
Bluetooth Smart® (Low Energy)
Airplane mode
Compatibility
Free app on iOS and Android
Compatible with mobile devices that run iOS 11.0 or later, or Android 6.0 or later.
Compatibility
Free app on iOS and Android
Compatible with mobile devices that run iOS 11.0 or later, or Android 6.0 or later.
You May Also Like
Get an extra charger
Get a cord extension
- FMFabian M.Verified BuyerRated 5 out of 5 stars11 hours agoGood customer support
I'm out of the calibration period that is a bit long (14 days). I got stuck after that but the support helped me unlocking it. The Circular Ring is a great device for monitoring my health. Highly recommended for the health-conscious!
- OHOle H.Verified BuyerRated 3 out of 5 starsYesterdayData is good, hardware is not durable
Don't wear the ring if you do any outdoor activities. I'm doing some climbings and the color has peeled off. Bluetooth can be a mess sometimes. Aside that using the Circular Ring for a few weeks and the ring provides detailed analyses of sleep and activity, and it's comfortable to wear. The app also provides useful reminders and personalized recommendations.
- ENEmma N.Verified BuyerRated 5 out of 5 starsYesterdayI recommend
Very satisfied!
- SBSophia B.Verified BuyerRated 3 out of 5 stars2 days agoIt never works!
My app does not detect my ring! The ring is comfortable but that's all. Data is always missing.
- JDJasper de V.Verified BuyerRated 5 out of 5 stars1 week agoI'm so happy with it so far
The Circular Ring is a great gadget for tracking my health. It offers detailed analyses of my sleep and activity. The device is light and has a modern design. A must-have for anyone looking to be more health-conscious.