GPS/GPRS/SMS tracker

We need a "GP S / GP RS / SM S" tracker with these features and Specifications:
1. Support "SM S" communication or "GP RS TC P" connection
2. Real-time locating and tracking.
Sent a "SM S" to the "GP S" tracker and it will return the longitude, latitude coordinate and moving speed of the tracking target
3. Geo-fence: It will send an alert to the authorized numbers when it breaches the restricted area that you set up before.
4. SOS button: press the SOS button and the "GP S" tracker will send a help alert and exact location to the authorized numbers for immediate rescue
5. Support alarm and remote monitor
6. The available "SM S" takes the control command change tracing function or switch "GP S".
7. Support multiple telephone numbers.
8. compact size, low power and weight design.
9. Fully Water Proof
10. 30 days battery life (May use u n rechargeable battery and replace battery after 30 days)
11. watch style (carpal)
12. Operating temperature: -20 to +65 centigrade
13. Customer cannot power Off or change settings
14. Enable or Disable power off and change settings using "SM S" commands.