... and/or Sending MessageBuilt-in Super Magnet (Optional) GPS Tracker,gps tracking,tracker,vehicle gps tracker GPS module: SiRF Star III GSM/GPRS module: Simcom ... Removable and rechargeable internal battery Re-branding acceptable GPS Tracker,gps tracking,tracker,vehicle gps tracker GPS module: SiRF Star III GSM/GPRS module: Simcom ...