Fangrui Product Details 1. N16 1.28 Inch Color Screen Smart Watch,support Heart Rate Monitoringblood Pressure Monitoring 2. Battery Capacity: 300mah 3. Touch: Full Touch 4. Bluetooth Version : Bluetooth 4.2 5. Resolution:240*240 6. Charging Method:usb Charging 7. Life Time:5-7 Days Of Use, 20 Days Of Standby 8. Charging Time: About 100 Minutes 9. System: Android System 5.1 Version Or Above,ios System 8.0 Version Or Above 10. Firmware Language: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Portuguese 11. App Languages: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian 12. Function: 13. Bluetooth Call,heart Rate Monitoring,blood Pressure Monitoring,blood Oxygen Monitoring 14. Step,distance,calorie 15. Sleep Monitoring (sleep Duration, Sleep Quality) 16. Social App Message Reminder:gmail,cnn App,zaker,line,facebook, Instugrate,facebook Message,qq,message,wechat 17. Multi-sport Modes, Scientific Analysis To Manage Your Health 18. Bluetooth Dual Headset Calling, Weather, Local Mp3 Playback 19. Daily Alarm Clock, Photo Control, Sedentary Reminder, Find Phone, Find Bracelet