All in one am very satisfied

The music quality is in my eyes, or rather ears are easily enough. I had previously heard a wired transmitters mumbi because you have unfortunately significant noise in the background.
How long does the battery, I do not know, but the transmitter is still some time even after the power is from the cigarette lighter from. So you can go shopping, for example, quickly and when you're back in the car, the phone connects directly again and you can hear music immediately.

A deduction of points there, because the transmission quality immediately after power is terrible and only after CA 1.Min running properly. The device needs some time to get warm somehow. But after that all is well again.