1、Fitment: The bluetooth module is a replacement for Citroen C2 C3 C4 C5 C6 C8, for Citroen Berlingo Jumpy Synergie, for Peugeot Expert. 2、Function: Match your mobile phone or tablet with the Bluetooth module, select Aux from the radio, and you can play your mobile music through the speaker. 3、Excellent Performance: The bluetooth adapter cable will give you high quality stereo music, with high definition, quick transmission, and low distortion. 4、Easy Installation: Plug and play, connector green plug into the socket at backside of your audio system, the red wire connected to the 12V positive pole, and the black wire connected to the 12V negative pole. 5、Handsfree Call: This face adapter enables hands free calling via bluetooth and is equipped with a microphone and is specially made for RD4.