Wireless FM Transmitter Car Charger with Remote for Apple All iPhone iPod, Rubber Coated Black with Chrome Design Can charge iPod or iPhone via the supplied car charger (charged via the transmitter) Uses the iPod or iPhone as a power supply so does not need to be connected elsewhere or require batteries Compatible with all iPods and iPhones 2G/3G 4s 4G except iPod Shuffles LCD display with blue background light Frequency range 87.5MHz~108MHz