The built-in remote control is convenient for the purposes of play / pause and next or previous song. For the other buttons, which are used for music selection, you really have to look at the display, which can detract significantly from the traffic. Since it would go easier if one uses the iPod directly.
The remote control system must also show in a certain angle to the transmitter, that you really have to try different positions.
Actually, it was always so that the display has not turned off. But whether this is intentional or caused by Apple, is unclear.
Along with the transmitter, a USB cable is supplied and a USB charger for the car. But if you have plugged the device to load rushes the radio. If you put out there and be able to play with the battery, the noise is gone.
All in all very useful, since you no cassettes or CDs longer needs.