Name:GPS Vehicle Tracker Model:PST-GPS201 Description: Working Based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or internet. Applications: Vehicle rental / Fleet management etc Protect child / the old / the disabled / pet etc Provide peace-of-mind for businessmen Manage personnel Track criminals secretly Main functions: Auto Track Geo fence Movement Alert Overspeed Alert Low battery alert IMEI checking SOS function Hidden number tracking SMS center Back up battery Parameter: Dim. 6.2x3.3x10.3cm Weight 110g Network GSM/GPRS Band 850/900/1800/1900Mhz GPS chip SIRF3 chip GPS sensitivity -159dBm GPS accuracy 5m Time To First Fix Reacquisition 0.1s Cold status 45s Warm status 35s Hot status 1s Car charger 12 to 24V input 5V output Wall charger 110-220V input 5V output Battery Chargeable changeable 3.7V 800mAh Li-ion battery Standby 48hous Humidity 5%--95% non-condensing