Efanr GT08 Bluetooth Smart Watch Phone Mate Wristband Activity Sport Exercise Fitness Sleep Tracker Health Pedometer With SIM Support NFC for iPhone Samsung Android Smartphones Compatible with Android System(full function support)and IOS System (limited function support,it can work with iPhone as a Bluetooth device,but Notification Push, Remote capture, Anti-lost are currently unavailable on IOS) Classic and customizable style,1.54" TFT LCD 2.5D Radian Capacitive Touch Screen for easy operation.Built-in SIM card slot and TF card slot,Support NFC functions and Bluetooth connection It becomes a standalone watch phone with SIM card inserted, working in 2G GSM 850/900/1800/1900 MHz Network. You can send and read texts, make or receive calls on your watch.Simply like a GSM cell phone. Without SIM card, it works as a cell phone companion,receiving and making calls, getting texts via Bluetooth. Function: Bluetooth Dialer,Pedometer,Sleep monitor,Sedentary Reminder,Music Player,Alarm Clock, Watch,Camera,Remote camera,Bluetooth SMS/IM Message Notifier,Message Reminder,Call Reminder,Answer Call,Dial Call,NFC for quick pairing Phone function: Make phone call directly from the smart watch,including answering and dial-up.SIM slot,support make calls by Bluetooth or smart watch;Sync function: QQ,wechat,Twitter,Facebook;time,schedule,read message or news;Entertainment: MP3,MP4,Camera