... tracker Parameter: tk102 gps tracker/car gps tracker/gps tracker manufacturer/gsm gps tracker/cheap car gps tracker GSMFrequency channel850MHz/900 MHz ... ,Dual built-in antenna design, waterproof ,dustproof anti-corrosion and anti-interference3,Support wide voltage, all vehicle are available, ... ,Phone lock the vehicle/car, just such as put the car in your pocket, Anti theft and do not worried steal ...