1.    Support GPS/GSM double location

2.    Support GPRS/Internet location

3.    Support GPRS auto reconnection when GPRS breaking

4.    Support GSM/GPRS working mode switch

5.    Support short message command and remote set parameters

6.    All parameters can be auto saved

7.    Support auto sleep and power saved

8.    Small size: full group size is only 7*5*2cm.

9.    Support NMEA 0183 protocol upload to GPRS server

10.   Free monthly rent, Point-to-Point, Point-to-troop ,troop-to-troop monitor