This is one of the most popular jammer in 2018.
As a multi-function desktop jammer, this product can block 8 frequency bands. Such as all cell phone signals: GSM/CDMA, 3G, 4G. It can also block GPS,WIFI and other signals. It has 19W high power, the jammer range is very large, it's block signal output is stable. Have separate frequency switch, you can choose according to need to open or close a certain frequency band. It also has power adjustable function, you can adjust the range of interferen