Features: 1.Simply plug the MMI connector into the socket on the back of the radio. 2.Pair your phone or mp3 or Pad with the module compatible with Bluetooth. 3.The module does not require a password when connecting. 4.Plug and play ,very quick and convenient in use. 5.Match your phone or tablet to the Bluetooth module, then select Aux from the radio, and then you can use your phone to play music through the car speakers. 6.Set up automatic pairing in one minute, existing CD changer can still be used. Specification: Item Type:Audio Receiver_x000D_ Material:ABS_x000D_ Color:Black_x000D_ Compatible with Bluetooth 4.1_x000D_ Wire Length:23cm / 9.06in_x000D_ Supported Configuration File:A2DP (Audio transmission)_x000D_ Fitment:_x000D_ Fit for Benz (fit for 2009 and later Model!!!!)_x000D_ Fit for C class_x000D_ Fit for CLS 2010_x000D_ Fit for E class (W212 / S212)_x000D_ Fit for M class_x000D_ Fit for R class_x000D_ Fit for S class and others with the special equipment Media Interface (Code 518) PackageList: 1 x Audio Adapter