A shopper sur : 
www.perfectjammer.com
Perfectjammer has professional portable 3g 4g 5g mobile phone cheap jammer for sale. Here you can buy a cheap mini portable or handheld jamming device, jamming range depending on the size of the device. Depending on the use, you can find personal or classroom blocker devices
Pinned onto cell phone jammer
Also from www.perfectjammer.com
