Panasonic SL-CT480 Portable CD Player (Silver and Blue) Thin, compact, and lightweight design with pop-up disc-eject system No-Skip shock-protection system with 40 seconds backup memory Up to 35 hours playback with two AA alkaline batteries or 14 hours playback with two AAA alkaline batteries (all included) Slide-lock, full-open top cover, heat-resistant polycarbonate body 24-track programming, MASH 1-bit digital-to-analog conversion system for superior audio performance