GPS-jammer is for the signals of the global positioning system (GPS). It is a systemfor the worldwide determination of position.By the relative mean transmission power of the satellites, the orbit in height ofca. 19,500 kilometers over the earth and the small Effizienz of the aerials ofthe GPS are the PS-signals only to receive with an avowed small field strength.Already disturbing signal with very lower field strength, the reception can cover overof the satellites. An additional modulation of an interfering transmittercan completely stop.1, An effective guard against GPS satellite positioning tracking! 2, Effective interference with the GPS satellite signal your whereabouts to protectprivacy. 3, Only interfere with GPS satellite signals without affecting the normal phone answering.4, Portable high-capacity built-in lithium batteries with electricity can be usedfor five hours. 5, Even if the vehicle does not start to use the same power source, this can be addedSelvage (available on-board charger electricity). 6, Small size, power, light weight, a large coverage area, easy to carry. Dimensions:58*43*18mm producing area:China payment:T/T in advance supplying capacity:500pcs/day