ITEM NAME:Great Performance Car FM AM Radio Stereo Antenna Signal Amplifier Booster Description: - Power supply voltage: DC 12V, Power: 60-100 MA - Operating Frequency: 48-860 MHZ - Gain: 25dBi  ± 3 - Output line length: 40cm - Suitable for: Car FM reception, can increase the reception distance and enhance the weak signal reception sensitivity. Package Included: 1 Piece Signal Amplifier Booster.Suitable for: Car FM reception, can increase the reception distance and enhance the weak signal reception sensitivity. 1 Piece Signal Amplifier Booster. - Output line length: 40cm.