Place of Origin : New York,United States

First, you need to know what types of mobile jammers are there. According to the interference frequency band classification: 2G , 3G , 4G cellphone signal jammer. According to appearance classification: Handheld telephone blocker, desktop cellphone blocker device, mini type mobile jammer, hidden cell phone blocker.
http://www.perfectjammer.com/all-cell-phone-jammers-blockers.html