Main Functions: ECG function, Bluetooth call, HRV function,Meto function, temperature monitoring, blood oxygen monitoring, breathing training, mood detection, fatigue detection, stress monitoring, fe more→male health (period tracking), Heart rate monitoring, blood pressure monitoring, sleep monitoring, sedentary reminders and other health functions.Step count/calorie/distance, multi-motion mode, music control, games, intelligent voice assistant. Master Chip 7013A "Temperature sensor" Contact temperature sensor Blood oxygen Infrared light+red light true blood oxygen gravity sensor KXTJ3-1057 ECG chip VP555ER PPG chip Dual PD-VP555ER Virbation Mute/vibrate Waterpfoof Level IP68 Compatible System