For a reasonable price, this is a device that meets the requirements "Music Transfer" and "free speech" in reasonable quality. Unfortunately, there is a function with which one the music in different modes, eg. B. Shuffle or Random can play. So you have to click through to their favorite titles at larger amounts of data on the USB memory. Sometimes unpleasant sound distortion occur, reminiscent of the sound of a drawn-tape a cassette deck (knows that anyone still?). I do not know what the cause is, maybe the MP3 converter has momentarily lost the transmitter? The quality in speakerphone mode is neat, you will understand the caller, even at higher speeds well. Enjoyed the intuitive possible installation of the device, which I have not yet figured out how to fix the steering wheel module. I would recommend to MP3 converter after the first experience quite. Good value for money!