Phonetone 1800MHz 3g Phone Repeater 70db gain Signal Booster with ALC AGC Automatic Gain Control Color: Black Compatible Phone Manufacturer: All Phone Work on 1800MHz Compatible Carrier: All Carriers Work on 1800MHz Frequency: 1710 ~ 1785 MHz 1805 ~ 1880 MHz Gain: 70dBi Connector: N-female Power Requirements: Power Supply: AC 100-240V; DC 12V/2.0A Dimension: 4.80 x 4.29 x 1.06 in