FM Transmitter X8 Wireless Car Kit device for easy and quick music playback on any car stereo with a radio, without additional actions. Select an empty frequency that is not being broadcast by an active radio station and sync the FM Transmitter device and your stereo to the same frequency to listen to music through the car speakers. It features a Handsfree function so you can receive calls and talk on speakerphone. It has USB ports for easy smartphone charging. Finally, it is powered by the car's cigarette lighter.