Battery Capacity : 170 mAH, Life Time : 3 Days of Normal use,7 Days of Standby, Charging Method : Charging clip, Charging Time : 2-2.5 Hours,HS6620d chipset, 512kb storage rom + 64kb ram, 1.3 inch ips resolution 240 * 240 oled single touch color screen, Tough Gorilla Glass Touch Panel,Use Fitpro app to connect the phone (Android 4.4 and ios 9.0 or above),Heart rate monitoring, oxygen measurement of blood pressure, Support multiple movement modes, Bright screen Control, Sleep monitoring, remote camera control, sedentary reminder, Push Notifications (Whatsapp/Text/Call/Social Media), Bright adjustment, calorie calculation, stopwatch, Full Fitness Tracking through Application, vibration,A variety of different style dials for you to choose from to replace (Touch and Hold the Home Button to change Screen Wallpaper), Call reminder and push messages (sms / skype / facebook / twitter / whatsapp)