Features: 1. Bluetooth 5.0 version, backward compatible with Bluetooth protocols 2.0, 3.0, and 4.0. 2. Supports common MP3 format audio, as well as WMA, WAV, FLAC, and other high-quality audio format decoding. 3. Supports DSD large-capacity transmission, ensuring stable data transfer between devices and hi-fi sound quality. 4. Pair your phone or tablet with the Bluetooth module, then select Aux on your radio to play music from your phone through car speakers. 5. This adapter allows you to listen to music from your phone, tablet, or MP3 player (devices must have Bluetooth capability). 6. Supports hands-free calling with clear sound quality. Plug and play design for easy installation and convenient use. Specification: Item Type: Bluetooth AUX Adapter Material: ABS Voltage: DC12V Bluetooth: Bluetooth 5.0 Microphone Cable Length: Approx. 150cm / 59.1in (manual measurement, slight variations may occur) Fitment: Compatible with (E60): 5-Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT & M5 (Sedan and Touring) 2004 - 2010 Compatible with (E63) (E64): 6-Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet/Convertible) 2003 - 2010 Compatible with (E65) (E66): 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (including diesel models) 2002 - 2008 Compatible with M-ASK, ASK-CD, and CCC systems Compatible with 1 Series (E87, E88, E81, E82), 3 Series (E90, E91, E92) Installation: 1. Locate the pin socket in the car (typically found on the back of the radio) 2. Insert the adapter directly and connect the power cord. Package List: 1 x Bluetooth AUX Adapter 1 x Microphone Note: Before purchasing, please verify that the CD player interface matches our product's interface, as compatibility is required for functionality. Confirm whether your vehicle’s original audio system has an AUX input mode, as this cable only works with systems that support AUX; switch to AUX mode before playing music.