Bluetooth Chip: NRF52840

Screen size: 1.3" TFT  full touch screen

Screen resolution: 240x240

Battery capacity: 210mAh-3.8V；

Material:Zinc+Ceramic+silicone

Waterproof:5ATM                                                    

Professional swimming SWOLF, based on HRV health function, Afib, blood oxygen (optional)

Clock, date display

Data storage

OTA upgrade

Heart rate monitoring

Sleep monitoring

Step monitoring

Calorie monitoring

Standing monitoring

Distance monitoring

Arrhythmia monitoring

Blood oxygen function

Pressure value function

Breath training