Enjoyed my 3-he upgraded BMW with the JVC KD-R741 car radio, because I wanted to have a reasonable speakerphone. In conjunction with a special kit with interface can I use my built-in steering wheel remote control and enjoy now a super sound with the existing BMW-speakers- significantly better than with the original BMW radio. Music on Memory Stick also works in the best quality. However, I had the first radio send back because apparently def external micro. was. With Amazon no problem. Numehr also good speakerphone quality. I'm very satisfied.