Panasonic SL-SX290 Portable CD Player 40-second antiskip buffer and 24-track programmable CD memory CD-R and CD-RW compatibility, 1-bit MASH digital-to-analog converter Panasonic S-XBS bass boost "Pop-up" disc eject, hold switch, and multiple playback modes Heat-resistant polycarbonate body; up to 35 hours playback on 2 AA batteries (not included)