Parameter APP: Da Fit Screen size: 1.39" Screen resolution: 360*360 Touch type: full touch screen Capacity: 230mAh Charging method: Magnetic fast charger Waterproof grade: IP67 waterproof Screen Diag more→onal: 1.39" Waterproof Rating: IP67 Heart Rate: Yes Pedometer: Yes Calorie Counter: Yes Compatibility: Android 5.0 ,IOS 9.0 Bluetooth:5.2 Function Bluetooth calling,Notification,123 kinds sprot model(Display step count, exercise time, GPS exercise trajectory, calories, exercise heart rate tracking, mileage, and other data based on the immobility of the exercise mode),breathe training,Blood pressure,Blood oxygen,Sleep monitor,Pedometer,Sedentary Reminder,Drink Reminder,Remote