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Circular Ring Slim - The Thinest Smart Ring
No forced subscription
Haptic feedback with vibrations
Choose Your Finish
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.
Coherence
Dive into a state of optimal function and regulate your emotions and clarity.
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.
Coherence
Dive into a state of optimal function and regulate your emotions and clarity.
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.
Why Choose Circular
Click on the circles to discover the features
Experience Circular in 4 easy steps
1 - Unbox, Charge and Wear
2 - Download the Circular App
3 - Quantify and Adjust
4 - Earn rewards
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Get an extra charger
Get a cord extension
FAQ
Does Circular track my heart rate during exercise?
Yes, Circular tracks heart rate during exercise and many other activities. We recommend using the sport session circle to set the ring into a sport mode that will allow better and more frequent tracking than the regular mode.
Can you wear your Circular Ring only during sleep?
Yes, the majority of the analysis are made during sleep. At first, you may miss out on activity data that plays a role in determining your overall scores. But the scoring system will adapt.
How does Circular measure my body signals?
The ring first collects the body signals it needs thanks to its biosensors (green, infrared & red optical pulse sensor, 3-axis accelerometer, and temperature sensors). The ring contains a built-in processor that will process the data and send the data by Bluetooth to the Circular mobile app & cloud for analysis. The Circular analysis engine uses machine learning to better understand your habits and offer a personal experience with personalized recommendations to improve your lifestyle.
Can Circular data synch with other apps?
The Circular app offers the ability to sync your data with several third-party apps, such as Apple Health and Google Fit. More to come in the future
Is there any hidden subscription to keep accessing the Circular app?
No, the app access will always remain free with the purchase of a Circular ring. We could be adding future optional premium circles that would be accessible at your choice, with your accumulated Circular coins.
Where do you ship and can I insure my parcel?
The Circular ring ships to most countries, except those under embargo. We invite you to try adding a product and checkout to see if we ship to that country.
Route protection offers you peace of mind with package protection for all of your orders at an affordable price. With Route, you don't have to worry about what to do if your order is lost, stolen or broken during shipment.
If your Route-protected order ends up lost, damaged, or stolen, Route’s expert support team helps ensure that your order gets replaced or refunded as preferred. Claims will be reviewed for approval within 1-2 business days from filing. Need to file a claim? File here
What’s Circular’s return policy?
You may return your fully functional and undamaged Circular product for any reason within 14 days of receipt of your ring for a full refund. Shipping and handling charges are not refundable. Outer-shells and sizing kits are consumables that are not refundable. For detailed instructions, please see the returns page.
- KKVerified BuyerRated 2 out of 5 stars1 month agoNice Shop - no manual - no support
The website is totally focussed on selling. Ring comes with no manual. There is a link on the package. Link points to the website, which is totally focussed on selling. Another ring could be all yours. Still no manual. You check the website…
When it seems not cool to add a manual to the product why not at least give the user a link to a guide that they can read on their mobile?
CCircular4 weeks agoThank you for your feedback, and we sincerely apologize for the inconvenience. We understand how important it is to have easy access to a user guide. You can find the user guide at the bottom of our website, and we're always here to assist if you need any further help. We're working to make this process more seamless, and we truly appreciate your patience!
- VSVirendra S.Rated 5 out of 5 stars2 months agoShahdol
Madhya Pradesh
- FMFabian M.Verified BuyerRated 5 out of 5 stars3 months 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!
CCircular1 month agoThank you so much for your feedback! 🙌 We're glad our support team was able to assist you in unlocking your Circular Ring after the calibration period. It’s great to hear that you're enjoying the health monitoring features. If you ever need further assistance, don’t hesitate to reach out! 😊💪 Keep prioritizing your health.
- OHOle H.Verified BuyerRated 3 out of 5 stars3 months agoData 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.
CCircular1 month agoThank you for your feedback! 🙏 We're glad to hear you're finding the data insights and app features helpful. However, we’re sorry to hear about the wear and tear during outdoor activities and the Bluetooth issues. We’ll definitely take this into account for future improvements. Feel free to reach out to our support team if you'd like assistance with these concerns. 💪🔧
- ENEmma N.Verified BuyerRated 5 out of 5 stars3 months agoI recommend
Very satisfied!
CCircular1 month agoThank you for the recommendation! 😊 We're thrilled to hear you're enjoying your experience with the Circular Ring. If you ever have any questions or need assistance, feel free to reach out! 💍✨ #StayHealthy