Originally developed for Sony's MiniDisc players, the ATRAC3 format increases the sound compression rate by approximately one-tenth, thereby reducing the file size and enabling you to store more music. ATRAC3plus goes even further, with compression levels of 1/20 the original sound source, but provides stronger sound quality than other formats and comparable compression levels. The 512 MB memory will store up to 340 songs, or over 22 hours (calculated at 4 minutes per song using ATRAC3plus compression at 48 kbps). Though it doesn't play WMA or WAV, these formats can be converted into either ATRAC3 or ATRAC3plus.

Because music is stored on internal flash memory--with no moving parts, like hard drive-based players--the NW-E105PS won't skip when jostled, making it the perfect workout partner. The NW-E105PS has a blue backlit LCD that provides song information (such as title, artist, album, etc.) and easy toggle navigation. It also includes a bass and treble equalizer.

What's in the Box
Sony NW-E105PS Network Walkman (512 MB, White), headphones, USB cable, CD-ROM with SonicStage software (for managing your digital library, converting tracks from CDs, and transferring tunes to the Network Walkman)