Colmi Smartring R02 18.9MM 9 (Black)

Take care of your health and fitness with the Colmi R02 smart ring. The device can monitor heart rate, sleep and blood oxygen saturation, plus it counts steps and calories burned. It also offers 21 sports modes and features IP68 water resistance. Convenient access to the information it collects will provide you with a dedicated QRing app. The Smartring is also distinguished by its lightweight design (only 4.4 g), up to 6 days of operation on a single charge and stylish, sleek design.