Features 1 gps tracker is designedfor advanced tracking monitoring specifically for vehicle tracking using gps gsm and gprs technology 2 the gps tracker isdesigned for use in any vehicle to track their location such as caravans boats motor homes trucks for vans and construction machinery and many more live tracking possibilities are limitless 3 this is particularlyuseful if your vehicle pets child or your belongings have been stolen 4 portable long standbytime simply operate stable capacity easy to install 5 power on open the backcover put the sim card into the seats then it is automatically power on whenbooting indicator will light for 10 seconds after the indicator is off coverthe back cover then it can be used 6 environmentalmonitoring starting up normally dial alarm number it will be easy to hearthe situation within 10 meters around the machine after waiting for fiveseconds 7 sound control dialing use mobile phones or fixed line to get through sim card number in the alarm hang up t