Rio Fuse 128 MB MP3 Player 128 MB of memory plays over 2 hours of MP3 and 4 hours of WMA music Backlit LCD displays ID3 track details and player settings Adjustable equalizer with pre-sets 18-hours of continuous playback with one AAA battery Compatible with computers with USB 1.1 ports running Windows 98 SE, 2000, ME, XP, Mac OS X