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Specifications of TWJ30 powerful GSM, CDMA jammer:

For all types of cellular system including analog (AMPS, TACS, NMT) and digital (GSM, DCS, CDMA, PDC, TDMA, PHS, PCS, iDEN)
Jamming distance: From 30 - 40 meters radius, depending on the strength and type of cellular system.
Input Power: 6VDC, 4A (using switching power adaptor)
Signal Source: PLL synthesized
Antenna: Internal
Size: (L)245 x (W)85 x (T)98 (mm)
Weight: about 650g

Features of TWJ30 cell phone high power blocker:

Low output power will not cause harm to human body or medical equipment.
Air freshener type is available for any place, without others' aware.
Adjustable jamming coverage fit different environments.

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