Sports activities recording: COLMI R02 smart ring can document your sports activities standing and let you know your sporting activities data constantly. View whole specificsHi?u qu? c?a s?n ph?m nhanh hay ch?m tùy thu?c vào c? ??a c?a m?i ng??i. Tuy nhiên ?? s?n ph?m phát huy ???c hi?u qu? t?t nh?t, ng??i s? d?ng nên dùng s?n ph?m liên t?c