The sound is a bit low but still of good quality and the plug is a little hard to insert and remove the cigarette lighter, you must force a little. These are just two small negatives that I blame him, but for the rest it is perfect and besides I can charge my iPhone 4 at the same time I listen to its contents.
The small transmitter is a good alternative, cheap and heard his car when music does not have a Bluetooth car radio and you do not want to invest a fortune.