Vehicle Car GPS Tracker 103B With Remote Control GSM Alarm SD Card Slot Anti-theft Realtime Spy Tracker GPS103B TK103B for GSM GPRS GPS System Tracking Device<br /><br />It is based on GSM/GPRS(850/900/1800/1900MHZ)wireless telecommunication internet and GPS satillite global position system・ track by several ways. Provide monitor software and global map. real-time track through the monitor software in your pc; Track through your PDA cell phone and google earth.<br /><br />Features:<br />.Small cubage・ dimension: 54mm*62mm*26mm・ weight: 120g・ easy to hide.<br />.Support orientation without orientated server: it can find out Real-time longitude and latitude・ time and speed. By using public map software and entering longitude and latitude manually・ you can find out the real-time information of position.<br />.If the target you are inquiring enters into underground parking lot or other GPS blind area・ the tracker will inform you the last  orientation.<br />.Remote Engine-stop and Resume.<br />.Tracking function by timing and frequency<br />.Authorized number added and deleted function<br />.Support hidden alarm and monitor function<br />.Geo-fence: Set up a geo-fence for the unit to restrict its movements within a district. The unit will send the message to the   authorized numbers when it breaches the district.<br />.Power supply disconnection alarm.<br />.Door alarm<br />.ACC alarm<br />.Movement alert: you can set up barriers when the vehicle is stopped. Once