COLMI R02 8 black with charging case
The COLMI R02 is a black smart ring in size 8 (18.1 mm) that combines health monitoring with sports tracking. It measures heart rate and blood oxygen saturation (SpO2), analyses sleep and tracks daily...
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Product description
Color
Suggested user
Sport/Fitness
Tension meter
Blood-oxy meter
Heartrate monitor
Accumulator capacity
IP-Protection
Bluetooth connector
Wi-Fi
Size
Weight
The COLMI R02 is a black smart ring in size 8 (18.1 mm) that combines health monitoring with sports tracking. It measures heart rate and blood oxygen saturation (SpO2), analyses sleep and tracks daily activity and workouts across 21 sport modes. Thanks to Bluetooth 5.0 it works with the QRing app and stores data for later synchronisation.

Weighing just 4.7 g and 2.7 mm thick, the ring is light enough to be barely noticed. It does not restrict hand movement and does not get in the way of writing, manual work or exercise. The IP68 rating means it can be worn while washing hands or in contact with water, and the included charging case keeps it ready to use.

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