1. Fitment: E60: 5Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT M5 (Sedan and Touring) 2004 2010; E63 E64: 6Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet/Convertible) 2003 2010; E65 E66: 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (and) 2002 2008; MASK, ASKCD and CCC; 1 Series (E87, E88, E81, E82), 3 Series (E90E91E92). 2. AUDIO FORMAT DECODING: The Bluetooth AUX cable microphone hands kit adopts the Bluetooth 5.0 protocol, which is backward compatible with versions 2.0, 3.0, and 4.0. It supports common audio formats like MP3, as well as quality formats such as WMA, WAV, and FLAC. You can enjoy music from your phone, tablet, or MP3 player. 3. Quick Adjustment: The connection is stable and performance is optimized. Pair your phone or tablet with the Bluetooth module, select AUX on your car stereo, and play music through your car speakers. 4. Stable Operation: The Bluetooth AUX cable supports hands calls and capacity DSD transmission, ensuring stable data transfer, fidelity, and reliable connectivity. Enjoy clear, uninterrupted calls and music for a safer and more enjoyable driving experience.