Sony D-NE20 MP3/ATRAC3 CD Walkman Ultra-slim personal CD Walkman compatible with compressed MP3, ATRAC3, 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 remote control with backlit LCD, battery charger, and rechargeable battery; 1-year parts warranty