Notice: This is not a GPS tracker as printed this is only a LBS tracker which depend on your working cellphone SIM card. There is no GPS chipset inside the device. Brand LSON Model TX-7 Quantity 1 piece(s) Color Black Material ABS Network GPS / GSM / GPRS / SMS Band 850 / 900 / 1800 / 1900 MHz SIM Card Qty. one SIM Emergency Phone Number Qty. 9 Tracking Information Method Monitoring and controlling platform / GPRS Power Supply 9~48V GPS Chip MTK6252 GPS Sensitivity 10m(2D RM) dB GPS Channel 1 Position Accuracy 10 m Altitude Limit 10 m Hot Start <2 seconds Warm Start <32 seconds Cold Start <38 seconds SOS Yes Geo-fence No Vibrating Alerts No Remote Monitoring No Engine Cut Off No Realtime Monitoring No Track Playback Yes ACC Anti-Theft No Overspeed Alerts No Low Battery Alerts Yes GPS Blind Area Alarm No Voice Call No Waterproof Function No Working Temperature -20~+70'C Working Humidity 20%~80%RH Packing List 1 x Car tracker 1 x Power cord (60cm) 1 x English / Chinese user manual Monitoring web: http://www.gps588.com