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The Colmi R02 smart ring tracks heart rate, blood oxygen saturation, sleep, and daily activity. It supports 21 sports modes, including walking, running, and workouts. Data is stored on the ring and synced via Bluetooth 5.0 with the QRing app.
The charging case also serves as a storage case, and charging is done via magnetic contacts. Its IP68 water resistance allows you to wear it while washing your hands, exercising, and bathing.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.