Easy Plug &Play InstalaionSimply put connector to the back of your car radio, no additional wiring needed for power supply. Open the phone bluetooth, search bluetooth click on the link. And switch car CD to AUX mode, then you can enjoy music from your phones.High Quality SoundUsing high-end Bluetooth master chip, stable bluetooth transmission performance, ensure Audio transmission not distorted. This aux cable 10-pin surface big plug adapter provides superior sound quality, reach high-definition standards.Play Music OnlineAdopted bluetooth 5.0 protocol, Compatible with 2.0, 3.0, 4.0 other versions of bluetooth protocol. This bluetooth Audio aux adapter supports various Audio source from your phone apps, enjoy real in-time popular music, say goodbye to disc and long signal cable.Premium MaterialMade of high quality ABS plastic, this radio stereo aux cable adapter is solid, durable and has a long service life. Supports bluetooth Audio and microphone hands free. You can answer phone call without difficulty.Compatibility Reference Compatible with BMW 3 Series E46 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic & M3 (Coupe, Sedan, Convertible) 2002-2006, this bluetooth Audio AUX adapter perfectly fit your car Audio devices.