1) Working based on existing GPS satellites

2) Losing your way location when in the wild, global GPS position tracker location finder will be the best solution. With global GPS position tracker you can look for real-time tracking, historical trajectory

3) GSM Module: SIMCOM 900

4) GSM band: 850/900/1800/1900 MHz

5) GSM / GPS Antenna: Built in

6) GPS Cold Start Time: 36 seconds

7) GPS Module: Sirf-Star or MTK

8) GPS channel: 32 channels

9) Locate precision: 10-20 Meters

10) GPS Hot Start Time: 1 second

11) Recharging Current: < 5V/300mA

12) Standby Current: < 10 mA

13) Uploading Current: <200ma 5v="" p="">

14) Battery: 2000mAh

15) Working Temperature: -20 0C to +55 0C

16) Absolute Temperature: -35 0C to +70 0C

17) Storage Temperature: -40 0C to +80 0C

18) Product size: 8.2cm(L) x 4.7cm(W) x 2.7cm(H)