Hand-Held Cellular/ Cell Phone( LED) Jammer JP A high powered, Hand-Held Cellular/ Cell Phone( IED) Jammer with a blocking range of up to 15metres ( depending on the signal strength in a given area) . Supplied with built in re-chargeable Ni-MH batteries and a charger, this unit can operate continuously for up to 3 hours on one charge. The charger can be powered from 110v to 240v AC power supplies. This unit will block the following frequencies: CDMA 870 - 880Mhz GSM 869 - 960Mhz. DCS 1805 - 1920Mhz 3G 2110 - 2170Mhz. Making it effective against analogue systems AMPS, TACS and NMT, and digital systems GPRS, GSM, DCS CDMA, PDC, TDMA PHS, IDEN, W-CDMA and UMTS. Size: 95 x 45 x 18mm' s. WARNING: In order to prevent interference do not operate near computers, notebook PC' s, televisions or radios.