1、Fitment: The bluetooth module is a replacement for Q5, for A4L, for A6L, for Q7, for A5, for S5, which is molded and designed depend on the original car data. 2、Note: This Bluetooth adapter can only be used to play audio, can not be controlled by the steering wheel, can not be used to answer the phone. 3、Excellent Quality: Bluetooth 5.0 version, and compatible with 2.0 3.0 4.0 5.0 other versions of Bluetooth, can support the commonly used MP3, WMA, WAV, FLAC, format, and can support DSD large capacity transmission. 4、Installation: Just plug the 6pin and 12pin connector into the socket at backside of your CD player, simple installation with the equipped disassemble tool. 5、Operation: Match your phone or pad to bluetooth module and choose Aux from your radio, then you can use your phone to play music through car speakers. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.