Product Description This is a versatile AM / FM radio antenna that is easy to hide on your car, truck or even a motorcycle! Simply hide it anywhere, simply past the windshield, the roof lining, the camper, and mount it to any surface. Product Feature This is a hidden built-in mini car radio antenna Remove that ugly antenna and install this cool hidden powered antenna with amplifier. Small and sleek so you can stick it anywhere in almost any vehicle. Line long: Approx. 118 in; Antenna size: 4.53*0.85*0.22 in. Voltage pickup is Nano volts, but with the magnetic type circuitry, it extracts a signal with a superior signal-to-noise ratio. .