MAIN FUNCTION:vehicle mini GPS tracker for car Motorbike, Built-in GSM and GPS double antennas with ACC to detect ignition.(SIM Card Not Include). GPS tracker for cars, very simple and easy to use for Motorcycle, Truck, Taxi, etc. REAL TIME TRACKING:Real-time car GPS tracker ST-901 Anti Lost Alarm Locator based on GSM , GPRS network and GPS satellites , locating and monitoring remote targets with our own GPS tracking APP, which display of location information accurately ( Positioning accuracy up to 10 meters ). Support 4-frequency: GSM 850/900/1800/1900 MHz which can Work worldwide, support track the real time address by Google link, support GPS/Glonass/Galileo/Compass four different satellite, support Geo Fence Alarm, support single location, support Over Speed Alarm, support Low Power Alarm.