This GT08 Smart Watch from Maya will the most useful and fashionable accessory you will have. It has 1.54" IPS LCD radian capacitive touch screen for easy operations. Also has a built-in SIM card and TF card slot. Works in 2G GSM 850/900/1800/1900 MHz Network. You can insert SIM and send and read texts, make or receive calls on your smartwatch. Without the SIM card, it works as a cell phone companion, receiving and making calls, getting texts via Bluetooth. It has functions like 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, and Dial Call. Has: MP3,MP4,Camera.