Signalbox 65dB GSM 3G CDMA PCS 850/1900MHz Cell Phone Signal Booster Repeater Amplifier with 4 Directional 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: 65dBi Connector: N-female Power Requirements: Power Supply: AC 100-240V; DC 12V/2.0A Dimension: 4.80 x 4.29 x 1.06 in