The document describes the CCJ100 cellular jammer device. It can block all cellular networks and standards in a 500m radius, depending on the signal strength in the area. It uses a microprocessor and PLL technology to transmit noise signals that cut off cellular communication between phones and towers. The device can block up to 4 frequency bands between 425-2170 MHz, including standards like GSM, CDMA, IDEN and UMTS. It has dimensions of 220x110x45mm and weighs approximately 0.7-0.9kg depending on included batteries.