Signalbox 65dB 1900MHz GSM DCS Booster Repeater with Panel and Yagi Antenna Cell Phone Signal Amplifier Color: Black Compatible Phone Manufacturer: All Phone Work on 1900MHz Compatible Carrier: All Carriers Work on 1900MHz Frequency: 1850-1910MHz/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