About Product: 1. Battery capacity: 260mAh 2. Bluetooth version : Bluetooth 5.0 3. Charging method:Magnetic charging 4. Resolution : 240*240 5. Waterproof rating: IP68 6. System: Android system 5.0 version or above,iOS system 9.0 version or above 7. APP:Dafit 8. Watch support languages:Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese 9. APP support languages:Simplified Chinese, English, Italian, French, German, Spanish, Portuguese, Russian, Japanese, Thai, Arabic, Korean Function: 1. Heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Multi-sport modes:walking, running,ride,basketball,football,badminton,jump rope,swim 5. Raise your hand to brighten the screen,turn your wrist to bright screen,alarm clock reminder,phone reminder 6. Information push reminder:SMS,WeChat,QQ,Facebook,Twitter,whatsAPP,Skype,Line,instagram,Kakaotalk 7. Sedentary reminder,drink water reminder,stopwatch,music control,remote camera,weather,screen brightness adjustment,APP motion track