About Product 1. Battery capacity: 280mAh 2. Waterproof level: IP67 waterproof 3. Bluetooth version : Bluetooth 4.0+5.0 4. Charging method:Wireless charging 5. Resolution:360*360 6. System: Android system 4.4 version or above,iOS system 10.0 version or above 7. APP languages: Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Arabic, Persian, Thai, Vietnamese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech 8. Device supported languages:English, Chinese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech, Polish, Spanish, German, Russian, Portuguese, French, Japanese, Italian, Vietnamese, Korean, Arabic, Persian, Thai 9. APP:Wearpro Function 1. Bluetooth call,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring,QR code 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Multi-sport modes:skipping,cycling,basketball,strike,badminton,running,football 5. Social APP message reminder:WeChat,QQ,Facebook,Twitter,Line,Whatsapp,Instagram 6. Breathing training,dial push, stopwatch, brightness control, information reminder 7. Remote music, remote photograph, weather, find phone (available after phone connected), password protection, calculator, split-screen display, shortcut widgets,massager