Bowers & Wilkins Zeppelin Loudspeaker Dock System for iPod (Silver/Black) An iPod dock/speaker system that also can be seamlessly integrated into your home stereo/theater system Comprised of two 1-inch aluminum tweeters, two 3.5-inch fiber cone mid-range drivers, and one 5-inch bass driver Uses Bowers & Wilkins' state-of-the-art technology to create flawless sound reproduction; charges iPod while docked The spring-loaded dock flexes to accommodate all dockable iPod models; compatible with iPod classic (3G, 4G, 5G, 5.5G, 6G, 7G), iPod touch (1G, 2G, 3G), iPod nano (1G, 2G, 3G, 4G, 5G), iPhone (1G, 3G, 3GS), and iPod mini Various other devices can play sound through Zeppelin using the 3.5-mm mini-jack analog/optical digital input