Signalbox 55dB 850/1900MHz 3G/GSM/CDMA/PCS Mobile Phone Signal Booster with Panel and Omni Antennas Color: Black Compatible Phone Manufacturer: All Phone Work on 850/1900MHz Compatible Carrier: All Carriers Work on 850/1900MHz Frequency: 824-849MHz/1850-1910MHz; 869-894MHz/1930-1990MHz Gain: 55dBi Connector: N-female Power Requirements: Power Supply: AC 100-240V; DC 12V/2.0A Dimension: 4.80 x 4.29 x 1.06 in