Tx Frequency (A)TX frequency 851-960 MHz (B)TX frequency 1805-1990 MHz (C) Tx frequency 2100-2170MHz Available system Include analog (AMPS,TACS,NMT) and digital (GPRS,GSM, DCS,CDMA,PDC,TDMA,PHS,PCS,IDEN,W-CDMA,UMTS) Total output power (A) +25dBm / 300mW (B) +25dBm / 300mW (C) +25dBm / 300mW Battery Ni-H battery DC 12V / 1600mA/h Continue using time 90 minute First time battery charge need 2 hours up Jamming range Radius 15 - 20 M the Cellular signal must ≤-85dBm in the location The jamming radius still depends on the strength signal in given area Safety regulation AC Adapter UL (E190582) CSA (LR112971 Level 3) Dimension 110(H)*62(L)*30(W)mm not include antenna Weight 300g