Topshine Information Technic Co.,Ltd is one of the leading China gps tracker for taxi ta680 manufacturers,Website:http://www.topshine-gps.com, equipped with a productive factory, welcome to wholesale cheap rfid tracking system, satellite tracking system, service tracking systems, fleet gps, automobile tracking devices from us. * ARM9 high speed microcontroller * All in one designed: GPS tracker + Camera + Microphone + Speaker + LCD Screen + SD card slot + Control Button. * Real time tracking by SMS or by GPRS * Internal backup battery  * Harsh accelerating /Harsh braking alert * OTA (update firmware from over the air upgrading) function * Edit and send notification message from online tracking platform to devices * User can check the car's physical address (city,street,etc) by SMS (optional, need center's support)    * Geo-Fence Alert, overspeed Alert * Locate by SMS with Google map's link                                                  * 4MB flash memory (default) + 4GB SD card data logger (optional) for GSM blind area * RS-232 serial port reserved. * Ublox7 GPS industrial high sensitive module * Authorized alarm phone numbers