OBD standard interface,Build in 180mAh / 3.7V battery,Real time vehicle tracking,Work with any 16 - pin OBD interface cars,Can locate and get the position of your vehicle remotely via GPRS ,Support function of map location inquiry ,No installation, no wiring harness, simply plugs into OBD port,Working model:support GPRS & SMS model,Shock Alarm,Low battery Alarm,Over speed Alarm.