About Product 1. Battery capacity: 200mAh 2. Waterproof level: IP67 waterproof 3. Bluetooth version : Bluetooth 4.0 4. Resolution:240*240 5. Standby time:30 days 6. System: Android system 5.0 version or above,iOS system 9.0 version or above 7. Bracelet languages:Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese 8. APP:Da Fit 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,cycling,skipping,basketball,badminton,football 5. Social APP message reminder:SMS,QQ,WeChat,Skype,Facebook,Twitter,Line,WhatsApp 6. Alarm clock, drinking water reminder, taking medicine reminder, information reminder, remote photo 7. Raised wrist screen, sedentary reminder, stopwatch, search for mobile phone, bracelet brightness adjustment, bracelet screen duration adjustment