Size: 66 (L) x 46 (W) x 17 (H) mm Simply insert a GSM sim card into the GPS unit. Whenever you call the unit it will respond with the coordinates of its location thru a SMS message. You can then use these coordinates on any mapping software (for example Google Earth) which will show where exactly the unit is located. This Cutting-Edge GPS tracker is designed for advanced tracking/monitoring, especially for vehicle tracking using […]