... .Built-in Super Magnet (Optional) Real time gps fleet management Product DescriptionGT30 is a small and reliable GPS/GSM ... Sending MessageBuilt-in Super Magnet (Optional) GPS Tracker,gps tracking,tracker,vehicle gps tracker GPS module: SiRF Star III GSM/GPRS ... rechargeable internal battery Re-branding acceptable GPS Tracker,gps tracking,tracker,vehicle gps tracker GPS module: SiRF Star III GSM/GPRS ...