About Product 1. Battery capacity: 280mAh 2. Waterproof level: IP68 waterproof 3. Bluetooth version : Bluetooth 5.0+3.0 4. Resolution:320*385 5. Charging method:wireless charging 6. System: Android system 4.4 version or above,iOS system 8.0 version or above 7. APP:Wearpro 8. APP supports languages:Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian, Thai 9. Device side support languages:Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Thai, Vietnamese, Arabic, Farsi Function 1. ECG monitoring,bluetooth call,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Multi-sport modes:running,cycling,climbing,skipping,jump rope,mountaineering 5. Social APP message reminder:SMS,QQ,Wechat,Skype,Facebook,Twitter,Line,Whatsapp 6. Encoder knob,custom watch face,breathing training, stopwatch,brightness adjustment,remote music, remote photo 7. Weather forecast,search for mobile phones,bluetooth music,password protection, calculator, split screen display,shortcut widgets,menstrual monitoring,massager