Features: * Brand new and high quality. *Bluetooth 5.0 version supports Bluetooth audio playback, voice navigation and Bluetooth hands-free calling. * Support Bluetooth/U disk, plug and play. * FM technology Full frequency FM wireless transmission can directly read audio files on Bluetooth mobile phones/disks. * Supporting power-off memory function. * Intelligent chip provides multiple protections such as over current, over charge, over temperature, over voltage, short circuit protection and anti burning, making it safer to use. * Suitable for all vehicle with 12V-24V voltage. Connection: The FM channels of the car and the handsfree are tuned to the same. A 1A USB stick is inserted into the interface and a memory card is inserted on the side. Only MP3 music can be played, and this music is not displayed on the car screen.