Q520 Smart Health Ring Sleep Monitoring Heart Rate And Blood Oxygen Levels During Sleep

Product information:
Color: Black with charging case 8#, Black with charging case 9#, Black with charging case 10#, Black with charging case 11#, Black with charging case 12#
Suitable for: Adults
Battery capacity: 18 mAh
Additional functions: Pedometer, heart rate monitoring, blood oxygen monitoring, sleep tracking, workout tracking
Wearing style: Finger-worn