• Is the Circular Ring waterproof?

  The Circular Ring 2 is fully waterproof with IP68 grade. The ring can be immersed in 50 meters of water for a maximum of 30 minutes. It is not recommended for use in salted water. The Circular Slim is waterproof and is 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. The Circular Pro ring is water resistant if you received it during and after April 2023.Featured

• How to wear your Circular Ring?

  Please read the Circular sizing guide: https://www.circular.xyz/sizing You can wear the Circular Ring on any finger. It is best to wear the Circular Ring on the fingers of your non-dominant hand. Eg: If you are right-handed, wear it on your left hand. The three middle fingers give the most accurate readings. Finger size can vary through the day, your fingers may swell in the morning or evening. The ring's logo should be positioned on the top side of your fFeatured

• How to know my Circular Ring size?

  Please read our sizing page The Circular ring sizes fit the standard ring sizes. If you already know your ring size, Circular sizes will be the same. You can also go to any jeweler to ask for your US equivalent finger size. If the size does not fit when you receive your ring, you'll have 14 days upon delivery to change it for free (except shipping) if your ring is unworn and intact. The ring comes in 9 different sizes from US 5 to US 13Featured

• How long does the Circular ring battery last?

  The ring has 2 different battery modes. Performance mode and Power mode. Power mode offers the best battery longevity; heart metrics will have a lower frequency acquisition. Battery life will be up to 6/7 days. Performance mode offers the best monitoring performance; heart metrics will have a high-frequency acquisition. Battery life will be reduced to 3/4 days depending on ring size. The settings are editable in the “My Ring” menu and your quick access.Featured

• Green LED vs Red LED vs Infrared LED

  The ring is equipped with three different LED colors, each serving a specific purpose based on their unique intensity and wavelength properties. Red LED: The red LED is known for its ability to penetrate the skin up to 10 times deeper, resulting in a high fidelity signal. However, it is important to note that the red LED also exhibits a higher signal-to-noise ratio and is more susceptible to motion artifacts. Infrared LED: On the other hand, the infrared LEDs share similar characteristFeatured

• Can I put my Circular Ring into Airplane mode?

  Airplane Mode of your Circular Ring disables all data transfer from your Circular Ring to your smartphone. It keeps the BLE radio transmission to the minimum to connect to the app again. When Airplane Mode is enabled, your ring will continue to collect and store data. How to Enable Airplane Mode To enable Airplane Mode, make sure that airplane mode is one of the enabled quick access features. If you're not sure, tap the burger icon in the upper left-hand corner of the Home page. Then, clicFeatured

• Where are Circular's products manufactured?

  The entire design, from conception to final manufacturing, is done in France. The design and conception are made in France. The mass manufacturing is done in China. Our tech development team and servers are also based in France.Featured

• What are Light Versions of the Circular ring?

  The Lite version is a sub-categorization of the Slim and Pro model of Generation 1, indicating that it is a ring with all the same features as its main version, but without vibrations (haptic feedback). There are Pro Lite and Slim Light versions. Shipping: Light rings are offered at a lower price. Find a comparison chart below: How to purchase your Light ring: On the product pageFeatured

• Connection issue: I can't find / see / connect / reconnect my ring in the app

  In some cases, you may experience ring disconnection issues. In the case that you already connected at least once to your ring: Place your ring on the charger and make sure it has been charged for at least 30 min. Check that your phone's GPS localization & Bluetooth is activated. And check in your phone settings that all app permissions are allowed for your Circular app. Kill the Circular app (swiped from background running app). And Restart your app. Keep your ring onPopular

• Can I reboot / reset the Circular Ring? (Soft Reset & Factory Reset)

  Factory reset removes all settings and returns the device to the same state as when it has been shipped from the factory. It will delete data stored inside of the ring. It keeps the last firmware. You should use it in last resort To perform a Factory reset: Connect your ring to your app Go into "My ring" on the top right Make sure the Ring is not on the charger Press the "Factory reset" button on the bottom of the page The ring will disconnect from the app. ThePopular

• My Circular Ring is not working anymore / dead

  If your ring is not working properly, we are sorry for the inconvenience and we will assist. Since the ring has multiple functions, it may be possible that a particular function no longer works. For example, the battery, the PPG led, the vibration (if you own a ring with vibration capabilities) or the charging functions may be one of the default. Please try to list the issues when you contact us as well as the last actions you performed before it stopped working. If the LED of your charger doePopular

• What should I do if my ring does not charge with the Circular charger?

  Place the ring on the charger first, then plug in the USB port. Check that the ring is well positioned on the charger. If you do not see the LED come on, try lightly moving the ring into the charger. If you still do not see the LED, try rotating the ring 180 degrees (like rotating like a wheel) so the opposite charging contact connects. Double check if the LED blinks for more than 10 seconds. If you still do not see the LED, try a different power source or other adapter/cPopular

• What is Power and Performance mode?

  The Circular Ring has different battery modes, which have an impact on battery duration. You can select either the Performance mode or the Eco mode. Power mode will give you up to 7 days of battery. Low-frequency heart metrics acquisition. Performance mode will give you up to 4 days of battery. High-frequency heart metrics acquisition. Simply navigate to your quick accesses or your ring's management menu to pick your favorite mode and start enjoying the benefits right away. WARNING: WheFew readers

• I lose battery power very quickly / high battery loss

  Please ensure calibrating your battery correctly by charging it fully up to 100% and for at least 120 minutes. If you don't do this, the battery will display false percentages. Please switch to Power mode if the performance mode consumes too much power for you. To switch to Power mode, please login to your ring and click on My ring data mode Power. As with all electronic products containing LiPo batteries, capacity decreases with use, which is natural and expected degradation. However,Few readers

• What are the wash & care instructions of the Circular ring?

  To clean your ring, use a soft cloth or hand wash with mild soap and water on the cloth. ‍ Keep the ring away from children. Do not leave the ring exposed to heat, such as in a vehicle under the sun. ‍ The outer-ring may get scratches against harder metal jewelry or other objects in close contact made of harder materials. We do not recommend wearing the ring while weightlifting, especially when handling metallic surfaces, as this may result in scratches. ‍ Like with all rings made of metFew readers

• My Circular Ring vibrates on its own, unexpectedly or constantly

  If you noticed that your Circular ring is vibrating by itself while you do not have any particular alerts/alarm activated or when not pressing your ring's button, then please follow the steps below. Please check if the problem persists after each of the steps. Go to Settings Notifications and turn off all notifications including "High heart rate alert", "Low heart rate alert". For the heart rate alerts, make sure to click on them, turn them off and then press the "Done" button. Go intoFew readers

• I have marks on my finger / skin, what is this?

  The Circular Ring features a hypoallergenic resin interior, ensuring maximum comfort and skin safety, even for sensitive skin. You may experience red marks on your skin that are called "irritant contact dermatitis" which is a phenomenon that can be common with casual rings due to sweat, humidity, heat, or sea salt: https://www.medicalnewstoday.com/articles/ring-rash Try to moisturize your finger and to pause wearing the ring. If sFew readers

• My Circular Ring does not vibrate anymore / Alarm clock is not working

  The Circular Ring 2 does not have vibration capabilities. Your phone will act as the vibrator. Your ring won't vibrate under 15% of battery. Please ensure that your ring as more than 15% battery when you want it to vibrate. If you have more than 15% of battery and your Circular Ring is still not vibrating please read this article.Few readers

• What should I do if my Circular Ring gets stuck on my finger?

  In case the ring gets stuck on your finger: 1‍. Push the bottom of your ring towards your finger, it should create a space above your finger, between your finger and your ring. Then pull the ring to tak it out while continuing to press towards your finger. Use cold water and soap or gel and slowly twist the ring to remove it. ‍ Hold your hand up above your heart until the blood pressure lowers and then go thourgh the previous steps again to remove your ring.Few readers

• What does the warranty exclude?

  Please read the full warranty and returns policy: https://www.circular.xyz/warranty-and-returnsFew readers

• Can I charge the Circular Ring on a computer or mobile?

  Yes, you can. The Circular charger has a USB-C port which you can easily plug into a computer, power bank, phone or any device with a female USB-C port. If your computer does not have a USB-C port, our recommendation would be to get yourself a USB-A to USB-C adaptor or a USB-C wall outlet. In the event that your computer is so thin that you have trouble charging your ring on the Circular Portable Charger, you can also get yourself a Circular USB-C male to female cable in ourFew readers

• My ring does not record data or does not lose battery.

  If you ring has near to 5% of battery, it will stop recording data to save power and avoid shutting down. If your ring has reached 0% battery, please reconnect your ring to the app. If you don't do it, your ring won't acquire data for the future. In some cases your ring might go into power saving mode when your battery is low (around 30%). If yourFew readers

• What should I do if I stop wearing my Circular Ring for a bit ? Where should I put the ring ?

  Keep in mind: Storing your Circular Ring for an extended period of time (2+ weeks) without following these steps may affect the longevity of your battery and its performance. If you plan to stop wearing it for a few days, you can place your ring in its original box. If you no longer have it, please store your ring in a temperate place protected from the sun, heat, cold, and humidity, and that does not have a reflective surface. If you plan on taking a break from wearing your Circular Ring forFew readers

• I have an issue with my Circular Outershell. It does not fit my Circular Ring.

  The outer shell is compatible with Circular Pro 1 only. The outershell does not fit my ring The outershell rotates around my ring If you have issues of this kind with your outershells when you receive it, please contact the support by sharing a picture and request a replacement. — It may also be possible that your outershell has a peak of metallic material on the inside that scratches your Circular Ring. If this is the case, we advise you to sand it down or remove it with a scraFew readers

• My ring can't charge more than a certain threshold %

  The ring is equipped with a lithium-polymer (LiPo) battery, which naturally degrades over time. As a result, at some point, the maximum charge capacity may be limited, reflecting the battery's actual wear. If you notice this immediately upon receiving your ring, please reach out to the support at support@circular.xyz or website chat so that we can assist.Few readers

• Can I polish my Circular Ring?

  We don't recommend polishing your ring. This could cause the electronics to break. If this were the case, replacement would not be guaranteed by the warranty. If you do it anyway, we would be happy to see your work, tag us on socials at @circularing or circularing bemore , we will surely make a shoutout ;)Few readers

• I broke my Circular Charger, how can I order a new one?

  You can buy a separate charger from this page on our web shop.Few readers

• How can I find a lost ring?

  If you’ve lost your ring and it has battery remaining, you can use the apps Find My Bluetooth Device on iOS or Wunderfind: Find Lost Device on Android to attempt tracking it down. Otherwise, reach out to our team here so we can assist you with the best steps. There's no need to worry about someone else accessing your data. If someone attempts to connFew readers

• My Circular ring is broken (flange, pins, outershell)

  It's possible that your Circular ring's flanges holding your Outershells may break if you remove your Outershells the wrong way; read this article. It's also possible that your Circular ring's charging pins aren't completely perpendicular. But as long as it's charging, it's not serious; read this article. It's also possible thFew readers

• I don't have a USB C port? What should I do?

  The Circular charger has a USB-C port which you can easily plug into a computer, power bank, phone or any device with a female USB-C port. If you don't own one of those, our recommendation would be to get yourself a USB-C to USB-A adaptor or a USB-C wall outlet. Be careful if you use your Circular Ring with a high voltage fast charger for smartphone or computer, you risk damaging it. In the event that your computer is so thin that you have trouble charging your ring, you can also get yourselfFew readers

• Can I wear my Circular Ring only for sleep / at night?

  You can use your Circular Ring only during sleep. The majority of the analysis is made during this time. You'll get all the scores. However, you may miss out on useful activity data and activity related insights that loop into your other scores. Your Circular experience may seem incomplete as a result. We still recommend wearing your ring 24/7 for optimal accuracy and personalization.Few readers

• How to change my Circular Outershell?

  The ring is made so that the outer-shell can turn only on one side of the button. Rotate the shell so that it goes over the button. Once this is done, you can dislodge it from the ring. Under no circumstances should you ever use force to remove the outer-shell, as this could break the edges of your ring. IMPORTANT NOTE: If for anFew readers

• Can I wear my Circular Ring while working out?

  Yes, you can wear your Circular Ring throughout all your workouts and movement routines. Activities are an important part of your Circular scores calculation. However, we don't recommend wearing your Circular Ring while lifting heavy weights, as it may get scratched.Few readers

• My ring has holes or bubbles on the surface

  Your ring may have holes or small bubbles on its surface. These are production injection points. They have no influence on your ring's capabilities. It remains waterproof.Few readers

• I have bad accuracy heart data / readings. What can I do?

  If you feel that you have innacurate readings from your ring while you're doing a live measurements or during a sport session then here is the solution. Firstly verify that readings are accurate if you place your fingertip on the PPG (LEDs) sensor directly. If the reading is not correct, please clean the LEDs spots with a cleaning cloth and water. If the readings are correct, please follow the next step. Slightly rotate down your ring around your finger so that the sensor is placed on thFew readers

• My stress score is not working. Why?

  For your stress score to work at its best, you need to be in performance mode. Power mode doesn't offer enough granularity in data frequency to calculate your stress level.Few readers

• Does the Circular ring has an alarm / notification for low battery?

  If the ring is connected to the app, the app will indicate through a phone notification that the ring is low battery. It will also send a phone notification when the ring is fully charged. The ring can't vibrate to let you know that it's low battery because it would cause a shutdown.Few readers

• I have trouble deactivating alarms vibration with tap

  Circular Ring 2 No vibration capabilities Circular Slim 1 To turn off the vibration of your ring on a Circular Slim, you need to tap the ring logo that is normally on the top of your finger. You need to tap gently and quickly twice. You don't have to hit hard. Circular Pro 1 To turn off the vibration of your ring on a Circular pro, you have to click on the button of the ring which is normally on the side and reachable by your finger. You have to click t twice in a row.Few readers

• My step counter is innacurate / under or over estimated

  Circular's algorithms are fine-tuned to recognize steps from the rest of your daily movement. Your ring is able to identify step patterns with a high level of precision (95% accuracy) from your finger. However, some parameters can cause the result to be distorted: You need to take more than 4 steps in a row in less than 30 sec. Constant vibrations (motorbike, driving, stroller, etc) against the ring can count for extra steps. If you hold someone else's hand during a walk or move them verFew readers

• What Is an ECG, How to use ECG and Why Is It Important?

  What Is an ECG? An Electrocardiogram (ECG) is a test that measures the electrical activity of the heart. Every heartbeat generates electrical signals, and an ECG records these signals to analyze heart rhythm, rate, and potential irregularities. Why Is ECG Important? ECGs are widely used in medical settings to detect heart conditions such as Arrhythmias (irregular heartbeats) including Atrial Fibrillation (AFib) and other Heart rate abnormalities Regular ECFew readers

• Tips to Solve Poor ECG Signal

  If you’re getting a poor ECG signal when using the Circular Ring — here are some simple tips to help you improve the quality of your reading: (https://storage.crisp.chat/users/helpdesk/website/-/5/7/1/8/57187f8252da5400/whatsapp-image-2025-03-26-a-17yacj0c.jpg =300x237) ✅ 1. Sit Down and Stay Still Movement or muscle tension can cause interference. 👉 Find a quiet place to sit down, relax your arm on your thighs, and stay still during the 40-second recording. ✅ *Few readers

• Is the Circular Ring a Medical Device?

  The Circular Ring 2 is not classified as a medical device as a whole. However, it does include a medical-grade ECG algorithm and features that meet clinical standards for specific health monitoring. ✅ The Arrhythmia Detection Algorithm used with the ECG sensor is FDA-cleared, meaning it has passed a 510K validation for detecting irregular heart rhythms like atrial fibrillation, which is, substantially equivalent, to an FDA marketed device. ⚠️ That said, the ring itself is *Few readers