Stream music to your vehicle’s FM stereo untethered with full Bluetooth® wireless functionality. It converts the Bluetooth® wireless signal to FM transmission so you can tune in to your car radio while driving. The frequency is adjustable, displayed on the front of the unit which plugs straight into a 12 or 24V spare cigarette lighter socket. Two USB ports are provided for charging your smartphones or tablets, as well as one of the USB ports being for MP3 and WAV file playback. An onboard microphone also gives you full hands-free call functionality.