Working Based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or internet. The most advanced technology of GPS and AGPS dual positioning. Type:GPS Tracker Function: 1.Real-time tracking; 2.Auto-tracking; 3.Blind area tracking; 4.GPS+GSM tracking; 5.History-trace checking; 6.Geo-fence; 7.Dropped alert; 8.Overspeed alert 9.Low battery alert; 10.Movement alert; 11.Remote voice monitoring; 12.Shaking sensor alert; 13.Sleeping Working mode; 14.3.7V 10000mAh Li-ion battery,Standby time around 120 ; 15.Waterproof IP67; 16.Built-in powerful magnet,easy to be installed and hidden. Specification: Model name:LK209B Dim:120mm x 65mm x 35mm Network:GSM/GPRS Band:850/900/1800/1900Mhz GPS chip:UBLOX GPS sensitivity:-159dBm GPS accuracy:5m Please note: function can only be using after the controller needs be successfully paired with the TV. Color: Black Material: plastic Package Contents: 1 x GPS Tracker 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.