1、Characteristic: AUX IN cable supports bluetooth enabled device, no functional limitations of the car radio, allowing you to connect to external audio sources. 2、Bluetooth Version: Aux in receiver is Bluetooth 5.0 version, compatible with other versions of 2.0 3.0 4.0 5.0 Bluetooth system. 3、Audio Format: Bluetooth cable supports commonly used MP3 format audio, and also supports WMA WAV FLAC and other high quality audio format decoding, can support DSD large capacity transmission. 4、Easy to Operate: Pair your phone with our Bluetooth module and choose Aux from your radio. You can enjoy the music in your phone through the car speakers. 5、Simple Installation: The installation is not difficult, just plug and play, no complicated operations.