Panasonic SL-SX330R Personal CD Player (Red) Portable CD player with digital amplifier for reduced distortion CD-R and CD-RW compatibility, 1-bit MASH digital-to-analog converter Panasonic S-XBS bass boost; hold switch, multiple playback modes D.sound digital amplifier with antiskip protection Offers 50 hours playback on 2 AA batteries (not included)