Logitech AudioStation Express for iPod Compact, sleek iPod speaker dock also charges your iPod via universal connector Two 2.5-inch Max-X high-excursion speaker drivers, a tuned bass port Powered by included AC adapter or 6 AA batteries (not included), which provide up to 10 hours of playback Video output jack, 3.5mm audio line-in jack for connecting iPod Shuffle and other MP3 players Compatibility: iPod nano (1G and 2G), iPod mini, 4G iPod with click wheel, iPod Color, iPod Video