70db GSM 900MHz ALC AGC Automatic Gain Mobile Phone Signal Repeater Control Fuction Phonetone Manufacturer Antenna Cable Color: White Compatible Phone Manufacturer: All Phone Work on 900MHz Compatible Carrier: All Carriers Work on 900MHz Frequency: 890-915MHz 935-960MHz 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