1. Check whether the ring is charged fully 2. The distance between CIRCUL and Mobile is within 10cm for bluetooth connection 3. Check whether the Bluetooth function of the mobile phone is turned on 4. Whether the Bluetooth permission of the APP in the phone settings is turned on 5. ...

Opening "CIRCUL", click the "Forgot Password" button, and reset the password according to the prompts.

Opening "CIRCUL", click the "register" button, enter the mobile phone number account and verification code and set the password to activate.

Open the Apple Store on your iPhone, open the Google Play Store on your Android phone, search for "CIRCUL" (App is called "CIRCUL+"), download and install,Select "Allow" all the usage rights required by app during installation, otherwise some functions may be unavailable.

It is possible and normal that the heart rate display on the screen of phone is different than the report. Because the display data on the phone is live data without any post process, and report data has been processed by algorithm, which may delete some unreliable data according to …

How is CIRCUL getting reading while in the box? If removed from box, it will stop detectionb ecause we use the reflective SpO2 detection technology, different with traditional method, using penetration method. If there is object inside the ring, SpO2 sensor will receive the reflective light, cause the wrong detection.

There is a motion monitoring sensor inside the ring. When the ring is worn for first time (begin to detect), in order to ensure the data quality and reliability, the calculation of SpO2 value needs to wait until the motion monitoring sensor shows static and the static period exceeds 8 …