Features: and high quality Made of high quality material, durableand practical to use Function via Bluetooth-enabled devices No functional limitations of the car radio Allows you to connect an external audio source It is possible from your smartphone to your car stereo to stream Pair your phone with our bluetooth module, and choose Aux from your radio. You can enjoy music from your phone through car speakers. You can just Insert this item to the back radio then Connect the red wire to 12V+, the black wire to 12V-. Match your phone or pad mp3 to bluetooth module.and Choose Aux from yourradio, then you can use your phone to play music through car speakers. Bluetooth 5.0 version, and compatible with 2.0 3.0 4.0 other versions ofBluetooth, can support the commonly used MP3 format audio, but alsosupport the WMA WAV FLAC, and other high-quality audio format decoding,non-ordinary Bluetooth functions, can support DSD large capacitytransmission. Plug into the CD player Jack (please confirm corresponding socket), mobilephone is connected with the Bluetooth module, aux audio sourceselection, you can play mobile phone music. Note: Please confirm the interface on the back of your CD host before buying. Specifications: Material: Plastic Cable Length: 17.5cm(Approx.) Black: GND- Red: 12V ACC+ Bluetooth Module Connector: 5-12 Compatibility: Bluetooth Streaming (A2DP) Interface for Mercedes Benz E/CLS/SLK 2004-2008 Warm Tips: The fitment is only for reference. Please make sure that connector can fit for your car before you order it. Package Contents: 1x Bluetooth Adapter Aux Cable Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.