iPod compatibility: iPod nano 2G, 3G, 4G; iPod classic 4G, 5G, 5.5G, 6G; iPod touch 1G, 2G; iPhone 1G, 3G, 3GS Docking port allows you to grasp the iPod as if it were in your hand as normal; accommodates iPod/iPhone/touch of differing depths without adapters Powerful DSP (Digital Sound Processing) and B&W drive unit technology, plus exclusive technologies--such as Flowport--deliver class-leading sound Intelligent features include a docking arm that rotates 90 degrees--perfect for watching videos or skipping through tracks in Cover Flow Stream music directly from a PC or Mac via the USB socket