Wireless Bluetooth adapter for Mercedes-Benz with AUX and noise filter1、Applicable Model: The bluetooth adapter is a replacement for Mercedes‑Benz A‑Class W169, replacement for Mercedes‑Benz B‑Class W245, replacement for Mercedes‑Benz C‑Class W203. 2、Function: With this AUX IN Bluetooth adapter, you have the ability to stream music from your external device, such as your smartphone or tablet, via the car stereo. 3、Highly Functional: You can turn on the hidden function of the vehicle, support online music playback, use various online APP, and the sound source is updated in time. 4、Multifunctional: Support T card, U disk playing, Bluetooth wireless audio, AUX input, microphone telephone hands free calling, ensure more convenient driving. 5、Easy Installation: Thanks to the simple plug and play installation, you can get started immediately via the Bluetooth connection.