Retina HD display | Heart rate monitoring Sleep monitoring | 20 days battery life
Main body size 45.7 * 45.7 * 12.1 mm
Watch weight (with strap) 55 g
Display screen 1.32″ TFT display
Bluetooth connection Bluetooth V5.0
Sensor Heart rate sensor, motion sensor, blood oxygen sensor
System requirement Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries.