The Bluetooth module is designed for vehicles with an MMI socket. If your vehicle has an MMI socket, this module is compatible. Simply plug the MMI connector into the socket located at the back of your radio. Pair your phone, MP3 player, or tablet via Bluetooth with the module, which supports Bluetooth version 4.1 and features automatic pairing without requiring a password. Select AUX on your radio to play music from your device through the car speakers. This module supports o playback via Bluetooth-enabled devices using the A2DP profile. Setup is quick and requires no configuration. The original CD changer functionality remains usable. The cable length is 23 cm. Compatible with models from 2009 and up, including C-Class, CLS 2010, E-Class (W212/S212), M-Class, R-Class, S-Class, and other models equipped with Media Interface (Code 518). Note: Confirm your vehicle has an MMI socket before purchase. This module supports o playback only and does not support steering wheel controls or hands-free calling. Plug-and-play installation. Material: Plastic. Bluetooth version: 4.1. Supported profile: A2DP (o streaming). Auto-pairing setup in under a minute. Works with existing CD changer. Functionality requires a Bluetooth-enabled device. Color: Black. Package includes: 1 x Bluetooth Adapter, Aux Cable (other items not included). Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement tolerance: +/- 1-3 cm.