Basic Function 1. Supporting GSM 900/1800 MHz or 850/1900 Mhz. 2. Supporting call pre-setting Phone number, incoming call number display, SMS function 3. Big memory of phone book to store 200 phone number. 4. Supporting FM radio, flashlight, clock, external T-FLASH card functions. 5. Having base station location, electron fencing management function. 6. Supporting pre-setting centre number, APN, time zone function. 6. Fast signal capturing, data timing backup. 7. Supporting single positioning and continuous tracking. 8. Supporting low voltage alarming and voice monitoring function. 9. Supporting the location information inquiry by SMS and Internet 10. May monitor without disturbing the tracked person and realizes real-time tracking. 11. Can position the holder by call or mobile phone, SMS. 12. Press SOS key for help to service center and automatic call to monitoring mobile phone which was set in advance. 13. The service center will help the user after receiving the alarm, and the user's position will be sent to the monitoring mobile phone by SMS. Specifications 1. Appearance, straight panel. 2. Color, black and iron gray. 3. Main button, 18 key 4. Side button, flashlight switch, keyboard lock, volume key, FM switch, One SOS emergency button for emergency aid, receive and Hang up buttons. 5. Display screen, 96 x 64 Pixels 6. End spile, 10 PIN 7. Module, GSM/GPRS module 8. GPS chip, G598B 9. GPS antenna, built-in PATCH 18×18 10: Receive frequency, 1575.42MHZ, C/A code 11. Channel, up to 210PRN channel, 66 search channel and 22 Simultaneous tracking channel. 12. Datum plane, WGS-84 13. GPS data output Baud rate, 9600bps (TXD,RXD) 14. GPS data output format, NMEA0183 V3.01 15. GPS sensitivity, -148dBm GPS positioning accuracy 3.0m(2D-RMS) DGPS,2.5m 16. Speed accuracy, 0.1 m/s DGPS,0.05m/s 17. acceleration accuracy, 0.1m/s2 DGPS, 0.05m/s2 18. Dynamic property, Max altitude, 18000m Max. Speed, 515m/s Gravitational acceleration is not more than4G 19. Hot startis not more than 3s Warm start is not more than 34s 20. Working temperature, -20 +72°C temperature, -30 +82°C Humidity, 20 92%(no moisture condensation) 21. Dimensions, 108*53*17mm 22. Battery, voltage 3.7V 1200mAh Standby time, 7days