Eight and a half hours of music in a tiny, two-ounce package! Sony's petite, portable NW-E75 packs 256 MB of memory, so it can store several CDs' worth of tunes within its silver exterior. Plus, the Walkman's backlit LCD lets you see track information for the song you're listening to, even in the dark. And you'll enjoy up to a whopping 70 hours of tunes from one "AAA" battery! The player and SonicStage® software support SDMI, a copyright protection system for digitally transferred music. You'll have access to a broadening range of music from major-label artists on the Web, as well as all the free MP3 content currently available. SonicStage handles MP3, WMA, and WAV files, converting them to Sony's sophisticated ATRAC3™ or ATRAC3plus™ format for playback. The result? Great-sounding on-the-go music!