Corelink Smart Watch bluetooth unlock wrist watch phone Touch Screen  with camera  NFC FM Radio for iPhone Android Samsung Galaxy Note,Nexus,htc,Sony (White) 1.54" LCD 240x240 pixels capacitive HD touch screen.built in SIM card slot and TF card slot(both card not included here),1.3M camera 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,FM Radio;Alarm Clock, Remote camera,Bluetooth SMS/IM Message Notifier,Message Reminder,Call Reminder,Answer Call,dial call NFC fast Bluetooth connection. It is compatible with Mobile phone with Android OS and Apple IOS This smart watch can work with iphone android Samsung phones or any devices via Bluetooth 3.0 connection.(Note:Compatible with Android System(full function support), IOS System (limited function support,it can work with iPhone as a Bluetooth device,but Notification Push,Remote camera,Anti-lost are currently unavailable on iOS)