PodGear CarDock FM Car Cradle and Power Adapter with built-in FM transmitter for Apple iPods. For all iPods with Dock Connector. The PodGear CarDock holds your iPod in position in your car whilst keeping the battery charged. The line-out socket allows you to use the PodGear Cassette Adapter, auxiliary cable or FM transmitter to feed tunes to your car stereo. The cradle adjusts to almost any position. Keep your iPod just where you need it to select the next play list and keep your tunes coming. Compatible with 3g, 4g and mini