I bought this as a temporary fix for my boyfriend until he got a new head unit and that is all I would recommend it for. The sound quality is poor and constantly crackled so you couldn't turn it up and it would just stop after it had been playing for so long. I only paid a few pence for this plus postage and that is all it's worth.
If you don't have a USB port on your stereo then I recommend the cigarette lighter style adapters and don't go cheap - pay a bit more for better quality else you'll only be paying out again in a few weeks for a new one because you're fed up of a constant crackle or high-pitched squeal (as I get with the wireless radio transmitter).
ive bought about 6 of these since learning to drive a few months back. only 2 pf them have worked nd they dont seem to last long. its not as if i bash them about or anything nd its really just not good enough! i would have liked a few reviews to go by here.. not my best amazon purchase =(