Bluetooth Version Bt 4.0 compatible Os Android 4.4 Or Above , Ios 8.4 Or Above operating Mode FulL-Touch Screen app Name Lufun Health app Language Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese special Features waterproof Ip67 Waterproof heart Rate Monitor Support blood Pressure Monitor Support step Count Support multI-Sport Modes Support pedometer Support call Or Message Reminder Support reject Call Support call Id Display Support alert Type Vibration auto LighT-Up Screen Support brightness Control Support music Control Support stopwatch Support weather Display Support more Functions Support Alarm,calender,sedentary Reminder,camera Remote Control,antI-Lost, technical Parameters sensor G-Sensor, Heart Rate Sensor screen Size: 1.28 Inch type: Tft resolution: 240*240 Pixels battery Battery Capacity: 220 Mah using Time: About 7 Days charging Time: About 2 Hours charging Type: Magnetic Charging app