At-12a gps/gsm tracker is a vehicle remote positioning device with built-in gps and gsm/gprs technology in compact size. It can transmit the longitude and latitude coordinates to your cell phone by the sms. User could use the coordinates to find its location on the google maps or other map software. The tracker also uploads position data to a designated server through gprs. User can look for real-time location-tracking and historical track through the our web 1. Woking 6 days in sleep mode as internal battery 2. Support 4-frequency gsm 850/900/1800/1900 mhz which can work worldwide 3. Support track the real time address by google link 4. Suppot waterproof 5. Support daily report tracking 6. Support cut oil and electricity 7. Support geo fence alarm 8. Support single location 9. Support alarm of power off 10. Support sos alarm 11. Support over speed alarm 12. Support low power alarm 13. Support time zone exchange 14. Support move alarm 15. Support mileage alarm Neutral color package