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.Work with i-Pod / i-Pad / i-Phone 5 5C 5S 6 6 plus, for Samsung, for HTC, for Sony, for Nokia and any other phones or pads with bluetooth function. Bluetooth 4.0 system, and compatible with other versions of 2.0 3.0 4.0 Bluetooth system, support commonly used MP3 format audio, but also support WMA WAV FLAC, and other high-quality audio format decoding, non-ordinary Bluetooth functions, can support DSD large capacity transmission. Easy to install Condition: Bluetooth Module Voltage: 12V Works with the following car models with AUX button : For Citroen C2, C3, C4, C6, Berlingo, Synergie 2005 Blau-punkt/VDO/for Bo-sch RD4; For Citroen C5, C8 2004 Blau-punkt/VDO/for Bo-sch RD4; For Citroen Jumpy 2007 Blau-punkt/VDO/for Bo-sch RD4 For Peugeot 207 2006 Blau-punkt/VDO/for Bo-sch RD4; For Peugeot 307, 307SW, 407, 407SW, 607, 807, 1007 2005 Blau-punkt/VDO/for Bo-sch RD4; For Peugeot 307CC 2004 Blau-punkt/VDO/for Bo-sch RD4; For Peugeot Expert, 308, 4007 2007 Blau-punkt/VDO/for Bo-sch RD4 Installation: Connect red wire to ACC 12V+ Connect black wire to GND 12V- Insert white 12Pin connector into the 12Pin Socket at CD host backside (please confirm corresponding socket) Metch your mobile phone with the Bluetooth module ( BT5908) Choose AUX audio source on you car radio, then you can play mobile phone music through your car speaker. colour:black Material:Plastic + Metal Package Contents: 1 * Adapter 2 *Hardware tools Only 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.