1、Features: You can achieve the function via Bluetooth‑enabled devices without functional limitations of the car radio, and allow you to connect an external audio source. 2、Bluetooth Version: Adopt Bluetooth 5.0 protocol, backward compatible with 2.0 3.0 4.0 5.0 other versions of Bluetooth protocol, not ordinary Bluetooth function. 3、Applicable Format: Support common MP3 format audio, support for WMA, for WAV, for FLAC, and other high quality audio format decoding. 4、Stable Transmission: Support DSD large capacity transmission, stable data transfer between devices, and you can use watching movies, map navigation, etc. 5、Easy to Use: Plug into the CD player Jack (please confirm corresponding socket), mobile phone is connected with the Bluetooth module, select aux audio source and you can play mobile phone music.