Belkin TuneCast II

Another chunky FM transmitter, using AAA batteries. It connects via a 3.5mm cable, and there’s a slot to plug in a 12V charger. However, this will only power the transmitter if you don’t have batteries – there’s no USB connection for you to charge an iPod. We found signal quality patchy, and there are only four presets. One of the cheapest on test, but it’s not the easiest to use.