uxcell RV Radio Stereo FM AM Antenna Signal Amplifier Product Name: Radio Antenna Signal Amplifier; Dimension: 58 x 25 x 18mm/ 2.3 x 1.0 x 0.7 inches(L*W*H) Material: Plastic,Metal Color: Black Package Content: 1 x Radio Antenna Signal Amplifier Total Length: 30cm/ 11.8 inches