Originally Posted by
jerryss
P.S. I bought a 3.5mm to 2.5mm converter plug, so that I could use this in my rental cars too.
Yes, you can use it in cars with aux port. We have 4 models of BTunes. For the 2.5mm and QC25 models, you need a "2.5mm female 3.5mm male adapter". For 3.5mm and QC15 models of BTunes, you can just plug them into the aux port.
If the aux port is on the dash board, make/receive phone calls is pretty easy.