Bluetooth 50 version, also support 40 /30 /20. Non-destructive installed in your car.Just plug one end of this cable into the CD changer input in the back of your stereo.Choose AUX from your radio and you can play music from your phone in your car.Match your phone or pad to bluetooth moduleand Choose Aux from your radio, then you can use your phone to play music through car speakers.You can hear music from your phone/pad/mp3(They should have Bluetooth function).Fitment:For C2 2005 + /VDO/ RD4For C3 2005 + /VDO/ RD4 C4 2005 + /VDO/ RD4 C5 2004 + /VDO/ RD4For C6 2005 + /VDO/ RD4For C8 2004 + /VDO/ RD4Citroen Berlingo 2005 + /VDO/ RD4For Jumpy 2007 + /VDO/ RD4For Synergie 2005 + /VDO/ RD4For Expert 2007 + /VDO/ RD4For 207 2006 + /VDO/ RD4For 307 2005 + /VDO/ RD4For 307SW 2005 + /VDO/ RD4For 307CC 2004 + /VDO/ RD4For 308 2007 + /VDO/ RD4For 407SW 2005 + /VDO/ RD4For 807 2005 + /VDO/ RD4Peugeot 1007 2005 + /VDO/ RD4For 4007 2007 + /VDO/ RD4.Voltage: 12VInterface: BluetoothItem Type: Cables, Adapters & SocketsMaterial:ABScolour:blackPackage Contents:1 x Audio Cable AdapterOnly the above package content, other products are not included.Note: Light 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.