VT600 Vehicle gps tracker is one of our most selling deivce,which got good feedback from market. We have solo agent in India and Saudi Arabia ect. Also we have regular client in Peru,Chile,Mexico ect VT600 GPS Tracker features: Quad Band 850/900/1800/1900Mhz Track by SMS/GPRS Track on Demand Track by Time Interval Track on Mobile Phone Internal 4MB Memory for Logging Inbuilt Tremble Sensor Internal Backup Battery SOS Alarm Geo-fence Alarm GPS Blind Area Alarm Low Battery Alarm Speeding Alarm External Power Cut Alarm Engine Cut (Engine immobilization) Fuel Monitoring Linsten-in (Optional) 3 Digital Inputs + 1 Outputs 1 Analog Input Detection