Features:* Brand new and high quality.* Bluetooth version 5.0 supports Bluetooth audio playback, voice navigation, and Bluetooth hands-free calling.* Support Bluetooth/U disk, plug and play.* Full frequency FM wireless transmission technology can directly Read audio files on Bluetooth/U disk mobile phones. * That the LED screen monitors the voltage in real time makes driving safer. * Support power-off memory function. * Intelligent chip provides multiple protections such as overcurrent, overcharge, overtemperature, overvoltage, short circuit protection and anti-burning, making it safer to use.* Suitable for all 12V-24V vehicles. Connections: The FM channels of the car and the hands-free are tuned to the same. 1A USB stick is inserted into the interface and the memory card is inserted on the side. Only MP3 music can be played, and this music is not displayed on the car screen.