W7 1.8 inch Color Screen 1. Battery capacity: 380mAh 2. Waterproof lev: IP68 waterproof 3. Bluetooth version : Dual Bluetooth 5. 04. Resolution:320* 3855. Charging method:Wiress charging 6. System: Android system 4.4 version or above,iOS system 10.0 version or above 7. Battery life: 5-6 days for normal connection, 25-35 days for standby. (Connect to use depends on personal usage) 8. APP:Wearpro 9. APP languages: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian, Thai 10. Device support languages: English, Chinese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech, Polish, Spanish, German, Russian, Portuguese, French, Japanese, Italian , Vietnamese, Korean, Arabic, PersianFunction: 1. Bluetooth call,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep ) 4. Multi-sport modes:cycling, swimming, running, climbing, walking 5. Social APP message reminder:SMS,QQ,Wechat,Skype,Line,6.Breath training,support more than 200 watch faces,custom watch face,bright adjustment 7. Alipay,stopwatch,remote music,remote photo,real-time weather,find a mobile phone,pword protection 8. GPS track,voice istant,alarm clock,calculator,split screen display,shortcut widget,meteorological,female istant,mager