Play your music through your head unit (must have 6-pin CD changer input). Bluetooth 5.0 version, also support 4.0 /3.0 /2.0. Non-destructive installed in your car. You can't connect a CD Changer to the head unit at the same time while this cable is connected. Just plug one end of this cable into the CD changer input in the back of your stereo and the other end to the mini jack input on the device. Control and display remain on the audio device -- the headunit will NOT control or display . Fitment: for 159 built from 09/2005 for 500 built from 10/2007 for Grande Punto (Typ 199) from year 09/2005 for New Panda for G.Punto for New for for Fiorino 2010 for (type 350) from year 09/2004 for Ypsilon (type 843) from year of construction 10/2003 for Ypsilon (type 846) from year 07/2011 for SMART Fortwo (model 451) from year of construction 03/2007 Colour: black Material: ABS Package Contents: 1 * Bluetooth Adapter AUX Cable Note: Please activate the correct source (. AUX / EXT / CD-) on your headunit for this adapter! Only 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.