Sony D-NE520 MP3 / ATRAC CD Walkman (Black) Feature-rich personal CD Walkman compatible with compressed MP3 and ATRAC3 formats Plays up to 490 songs on single CD-R disc in ATRAC3 format Skip-Free G-Protection technology guards against music interruption Bundled with SonicStage CD-burning software and compatible with Sony's Connect Music store Includes clip remote; 1-year parts warranty