Logitech mm50 Portable Speaker System for iPod (White) 3D Stereo technology dramatically widens stereo image for an enveloping audio experience Max-X high-excursion drivers with neodymium magnets provide remarkable sound quality Operates with AC adapter (included) or rechargeable Li-ion batteries Includes custom travel case Compatibility: iPod nano (1G and 2G), iPod mini, 4G iPod with click wheel, iPod Color, iPod Video