Aizbo GPS Watch GPS Bracelet Hiking Sports GPS Tracking Device for Child Elderly Tracking Pg88 Quad-band Handheld GPS Navigation Outdoor Smart GPS Tracker GPS Tracker GSM Wrist Watch Activity Tracker Smallest GPS Tracking Chip 1.5" LCD SOS Mobile Phone Personal GPS Tracking Device SOS function ,three phone numbers dialing at the same time and accurate positioning when press SOS button in emergency situation Real-time GPS monitoring orientation, and real-time tracking of base station double positioning (SMS/GPRS/TCP/UDP). Besides SOS function and shortcut calling to guardian, this smart GPS tracking watch also can send the location information to mobile and computer quickly by sending message or through GPRS. Also, you can get the tracker location information by online tracking service platform. his GPS gadget comes with one SOS call button and two additional buttons to call mom, dad, your sister or the home or office. You can speed dial three phone numbers from this GPS cell phone wrist watch with just a push of a button. Remote monitoring, high sensitivity of the microphone, can monitor and real-time track the holder without any interruption