Sound: Built with a end Bluetooth master chip for stable transmission and distortion audio. The 12pin surface big plug adapter delivers sound quality and meets definition standards. Easy Plug & Play Installation: Simply insert the connector into the back of your car radio; no additional wiring or power supply needed. On your phone, enable Bluetooth, search for the device, and pair. Switch your car CD to AUX mode to start listening from your phone. Play Music Online: Bluetooth 5.0 protocol, compatible with Bluetooth 2.0, 3.0, 4.0 and other versions. This Bluetooth audio AUX adapter supports audio from your phone apps for realtime streaming, eliminating discs and long signal cables. Compatibility Reference: Fits BMVV Z4 (E85/E86), X3 (E83), Mini Cooper (R50/JCW), Mini Cooper S R53. This Bluetooth audio AUX adapter is designed to fit your car audio devices. Use Scenarios: Daily driving: Stream music from your phone for a clearer, cable audio experience while commuting. Shared rides: Connect quickly for incar entertainment with passengers, using phone apps for playlists. Long trips: Keep navigation prompts and music in sync by switching to AUX mode and playing directly from your phone.