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