portable 6 channels wi-fi gps lojack 3g 4g cell phone signal jamm er

this is good quality 6 antennas full bands mobile phone gsm 3g 4glte 5g signal which bring us a strong jamm ing ability,the jamm er is capable of jamm ing all standard signals in the world. the device can be used in many countries,this is a universal device with many positive features. and it can not only cut off all 2g 3g 4g mobile phone signals, but also jam wi-fi gps lojack, rf 315 mhz 433mhz ,868mhz,lora, vhf uhf walkie-talkie & wireless headset/microphone signals. all-in-one jamm er is power full to blocks all the signals, jamm ing frequencies the jamm ing radius up to 40meters,longtime working on ac adapter or connet with car battery dc 12v moving used. suitable used in car or indoor meeting room ,school and home..syi