Multi Functions GPS Smart Watch: The GPS Watch main functions include Real Time GPS Position/ Two Way Call/ SOS/ Phone Book/ Voice Message/ Flashlight/ Camera/ Photo album/ Alarm Clock/ Silent Mode(Class Mode)/ Safety Fence/ Pedometer/ Historical Route etc. This smart watch is a perfect Christmas,birthday gift; Support SIM card:Speedtalk etc. Anti-Lost GPS Tracke: This Watch has built-in GPS positioning device, a superb choice for personal safety. You can track your family's location in real time anywhere, anytime; Historical Route Track: Past locations of the GPS watch in latest 90 days will be stored in system for your future checking.This watch is compatible with Android and iOS systems Two-Way Phone call & Video call: Besides serving as a GPS tracker, this smart watch supports voice calls and video chats. You can not only use this phone watch to track and protect your family, but also call them back remotely via the calling feature,know situation in time. The smart watch supports video call function,so you can see your family at any time. You can wear it when wash your hands or play with water SOS Emergency Call Anti-lost: One-touch SOS design, when in danger, the wearer presses the SOS button for a long time, and the emergency contact number will be automatically dialed. You can even set the SOS number as an alarm call, and call the police station with one click, so you can stay away from danger as soon as possible. You can set up a safe area centered on the watch wearer, and the watch will automatically sound an alert in your phone app once the watch wearer leaves the area IMPORTANT: This watch supports 4G network, while most GPS watches on Amazon support only 2G network. 2G network is going to be shut down in USA, and you must get this watch with 4G compatibility that works perfectly in USA. This is the reason why our price is higher than other GPS watches, 4G GPS watch needs much cost on the chip Silent Mode (Class Mode): You can set silent mode in the watch then the watch will not influence your child during school time Please read the user manual in the package carefully about how to make this watch working before you use it. This watch supports AT&T (from AT&T store),Speedtalk (from Amazon), RedPocket, T-Mobile etc. For birthdays, Christmas, Halloween or New Year's Day, this may be the best choice. It is very suitable for gifts to sons, daughters, nephews or other relatives and friends. Our watches can be used in both North and South America, if you want to take your watch to countries other than North and South America, please let us know in advance and we will recommend the correct version to you.