Qkking LG128 1.56 inch Curved Display Bluetooth Smart Watch Wrist Watchs Support Bluetooth SIM TF Card SMS NFC-Black 1.GSM 850/900/1800/1900 MHZ,Single Micro SIM Card 2.CUP:MTK6260A 533MHZ RAM 128M,ROM 64M 100% Original authentic by Qkking 3.Functions:Bluetooth Dialer,Contacts,Call Reminder,Clock,Anti-lost,Pedometer,Sleep Monitor,Sedentary Reminder,Calendar,GPS,NFC 4.1.56" TFT LCD Curved Touch Screen 240*240 pixels 5.Note:Android System can support all function in the description.BUT IOS only support Passometer,Calendar,Call Sync,calculator,Clock,Stopwatch