This is a very small hand-held jammer. Size only 62mm*34*120mm, very easy to carry and hide. Has an independent band switch, you can turn on or off a certain jamming frequency band as needed. Have cigarette lighter charger, you can use it in car.
If you need to get more and more information about devices that carry mobile interference, visit:
https://www.perfectjammer.com/all-cell-phone-jammers-blockers.html