The bluetooth module is made for Mercedes for BenzIf there is MMI socket,our bluetooth module will work. Just plug the MMI connector into the socket back of your radioPair your phone or mp3 or pad with bluetooth to the module, this name: KleveryIt is bluetooth 4.1 version, not need password when connecting. Choose AUX from your radio and you can play music from your phone in your car. 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.You can hear music from your phone or pad or mp3(They should have blueooth function).Note:Only audio playback, can not be steering wheel control, can not be used answer the phone.Plug and PlayMI SteckerMaterial: PlasticBluetooth: V4.1Supported Bluetooth profiles: A2DP (audio transmission)Set up with auto-pairing in a minuteExisting CD changer can still be usedFunction via Bluetooth-enabled devicesCable length: 23cmCompatible withfor Benz (fit for 2009 and UP Model)C classCLS 2010E class (W212 or S212)M classR classS classand others with the special equipment Media Interface (Code 518)Note:Pls make sure your car has MMI socketColor: blackPackage:1x Bluetooth Adapter Aux cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. 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.