Eview GPS/GPRS/GSM Vehicle tracking system(EV-601):

How It Works:

A GPS vehicle tracking device is placed on your vehicle(s).  The device can be permanently installed and hidden from view.  Or, it could be a portable unit run off of an internal battery.  As the vehicle drives, the vehicle tracking system will transmit its position back to any cellphone via GSM network. 

Features: 

1, Real time tracking by SMS or GPRS. 

2, GSM/GPRS simultaneously.

3, Auto Tracking by time interval(via sms).

4, Show location directly on cellphone.

5, Unit password setting.

6, External power lost alarm. 

7, Back-up batter low alarm.

8, Geo-fencing alarm.

9, Over speed alarm.

10, Coordinate saving. 

11, Movement alarm.

12, Voice wiretapping.

13, Stop Engine/Oil. 

14, User defined by SMS.

Specifications: 
GSM frequencies: 850/900/1800/1900MHz 
GPS chip: SiRF Star III 
GPS sensitivity: -154dBm 
GPS accuracy: 5 to 10m 
Time to first fix: Cold status 60s 
Warm status: 40s 
Hot status: 1s 
Input voltage: 6 to 30V DC 
Battery chargeable: 3.7V, 1300mAh 
Standby time: 24 hours 
Static current: 20mAh 
Storage temperature: -40 to 85C 
Operating temperature: -20 to85C 
Humidity: 5 to 95 RH (non-condensing) 
Mainframe dimensions: 106x22x 63mm 
Weight: 250g.