GPS Vehicle Tracker SOS alarm. Geo-fence alarm. over speed alarm. SMS/GPRS control. 32 MB falsh memory. listening function. Detailed Product DescriptionGps tracker, sos, alarm, odometer, flash, voice monitor , two way communication, cut off engine, measure fuel Applications: Real time trackinglocation; Vehicle alarm; Vehicle history tracking Fleet managemen: car, bus, taxi, truck and trailer etc. ...