Bluetooth 4.0 version, and compatible with 2.0 3.0 4.0 other versions of Bluetooth, can support the commonly used MP3 format audio, but also support the WMA WAV FLAC, and other high-quality audio format decoding, non-ordinary Bluetooth functions, can support DSD large capacity transmission.
I used to wire aircraft for two different American manufacturers. They could not explain how to connect male connector to male connector. Wanted control of my camera to take pics? I don’t think so! Get one that plugs into cigarette lighter and don’t butcher your factory wiring harness.