... tracker/gps tracker manufacturer/gsm gps tracker/cheap car gps tracker GSMFrequency channel850MHz/900 MHz /1800MHz /1900MHzGPRSClass ... , waterproof ,dustproof anti-corrosion and anti-interference3,Support wide voltage, all vehicle are available, convenient and shortcut4,Unique appearance, ... Five levels adjustable6,Phone lock the vehicle/car, just such as put the car in your pocket, Anti theft and do ...