Free XM SkyDock application required and available for download from the App Store. iPod touch/iPhone sold separately. MADE FOR: iPod touch (1st, 2nd and 3rd generation), iPhone 4, iPhone 3GS, iPhone 3G, iPhone. All models require iPhone OS 3.0 or later. *FM radio required (or you can use the included Aux In Cable if your vehicle has Aux In capability).