I got myself this adapter because me the cable has the AUX input simply annoyed. I have a iPhone4 and with this adapter you can use both the BT speakerphone from BMW and simultaneously also be connected thereto, as long as you can connect the BMW is only and only activates the adapter after the BT symbol is visible on the display of Navis. The power cord is very short and thus contributes not on why the Apple cable into this plug fits well under the arm without the cable bends. In addition, the adapter amplifies the signal something guiding to a better sound than that of a cable directly connected.
