new vehicle-mounted gps satellite signal block er privacy protection positioning anti tracking stalking for auto vehicles

it is universal, suitable for all kinds of cars,interfere with all current gps satellite positioning signals,effectively guard against gps satellite positioning and tracking. small size, high power, light weight, large coverage, easy to carry,work does not affect the normal use of mobile phones or other electronic devices. gps global satellite positioning system can not track or locate the specific location of the user to protect user privacy with this device,small size and lightweight to conveniently carry.syi