Panasonic SL-SX450 Portable CD / MP3 Player Slim, affordable personal CD player with 45-second anti-skip memory Compatible with CD, CD-R, CD-RW, and MP3 formats S-XBS bass boost enhances low tones to improve audio performance 20-track programming, random and repeat play, and skip/search functions Runs for 50 hours (CD) and 85 hours (MP3) on 2 AA batteries; 1-year warranty