Ten main functions: 1, a key to SOS distress: in an emergency, press the SOS button, namely to guardian sent a distress message. 2, double positioning: GPS satellites and dual monitoring base station positioning all real-time positioning tracking. 3, smart power-saving: GPS closed mode. 4, remote monitoring, high sensitivity of the microphone, the users in emergency, the voice of the real-time monitoring equipment around. 5, two-way conversations: users can call each other, can set up three affection real-time call number. 6, electronic fence: equipment centered on the map drawn an area, the area of APP and short message alarm immediately. 7, historical trajectory: path query three months anytime and anywhere. 8, GSM four frequency system: 850/900/1800/1900 MHZ. 9, time show that GPS precise GPS clock, don't need to manually adjust the time. 10, pedometer: steps to measure the user's walking.
