Feature: 1. Fitment: Aux cable adapter is replacement for Mercedes W169 W245 W203 W209 W164 W251 W221 R230 X164, etc, perfect matching your car. 2. Bluetooth 5.0: Adopt Bluetooth 5.0 version, compatible with the following versions, supports hands free, can answer the phone in clear sound. 3. Excellent Performance: Professional manufacturing, exquisite workmanship, high efficiency, high toughness, stable performance and high reliability. 4. Function: Match your phone or pad to bluetooth module and choose Aux from your radio, can enjoy music from your phone through car speakers. 5. Simple Installation: The installation is simple, just plug and play, red cable is connected to 12V+ and the black cable is connected to 12V‑. Specification: Item Type: Bluetooth Audio Adapter Material: ABS and metalMicrophone Size: Approx. 150cm/4.92ftBluetooth Version: 5.0 Fitment: Compatible with Audio20, Audio50 APS, Comand APS(only NTG2)Replacement for Mercedes W169 A Class Replacement for Mercedes W245 B Class Replacement for Mercedes W203 C Class Replacement for Mercedes W209 CLK Class Replacement for Mercedes GL Class X164 Replacement for Mercedes W164 M Class Replacement for Mercedes W251 R Class Replacement for Mercedes W221 S Class Replacement for Mercedes R230 SL Class Replacement for Mercedes CL Class 2004-2006. Package List: 1 x Microphone1 x Bluetooth Audio Adapter