Mini GPRS GSM Tracker car Vehicle SMS Real Time Network Monitor tracking locator check position take care kid and old people GSM frequency bands: 850M/900M/1800/1900M, world-wide;Telecommunications base station positioned, error 50-100 meters, so the more intensive base, the better the accuracy, otherwise the lower accuracy; Web search platform free lifetime use; you can go here to try: websitewww.gps588.com Admin: 5220101197 Password: 123456 Login for users to select IMEI Monitor function: call locator phone number, 3 seconds automatically answer, you can hear the locator 10 meters surrounding sound through the phone, understand the surrounding environment information to facilitate tracking; Size: 4.4X3.7X1.2CM; Weight: 26g; Built-in battery: lithium polymer battery, charging time can work every two days; Historical trajectory queries: support for 60 days track playback;