Product information:
CPU: NORDIC NRF52832
Size: 18/20/22mm
APP: Smart Health
Heart rate: HX3605
Acceleration Sensor: QMA6100P
Battery capacity: 20mAh
Waterproof level: IP68
Runing hour: 5-7 days single ring
Standby time: 10-15 days
System: Android 5.0 /10S9.0
Charging Interface: USB
Material: Metal