Specification Model C20 Bluetooth Version BT 5 0 Operating Mode Full Touch Compatible OS Android 6 0 or above iOS 9 0 or above APP Name Da Fit Watch Language English default Simplified Chinese Japanese Korean German French Spanish Arabic Traditional Chinese Russian Italian Portuguese Ukrainian Turkish Romanian 15 countries in total APP Language English Simplified Chinese Japanese Korean German French Spanish Arabic Russian Traditional Chinese Ukrainian Italian Portuguese Dutch Polish Swedish Finnish Danish Norwegian Hungarian Czech Bulgarian Romanian Slovak Latvian Indonesian Thai Turkish Vietnamese Hindi Pashto Lithuanian Estonian Slovenian Croatian Greek Filipino Hebrew Malay Serbian PersianSpecial Features Information Reminder Call Reminder Reject the Call Message ReminderHealth Heart Rate Monitor Blood Pressure Monitor Blood Oxygen Monitor Sleep Monitoring Sedentary Reminder Breath Training Exercise and Record Multi sport Modes support 24 sports modes Step Count Calories Distance Application Camera Control Music Control Alarm Clock Timer Stopwatch Theater Mode Weather Display Brightness Adjustment Muti Dials Customized Watch Face Mute QR Code Split ScreenTechnical Parameters Waterproof 5ATM Screen Size 1 71 inch Type TFT Resolution 280 320 pixels Battery Battery Capacity 380 mAhStandby Time 50 days Using Time About 15 20 days Charging Type Magnetic ChargingAppearanceDetails Material Watch Material