Sony D-E356CK Walkman CD Player Lightweight, compact design has attractive yet functional styling with easy-access controls and a user-friendly control panel Skip-Free ESPMAX technology provides six times faster recovery than the conventional ESP2 system Audio CD-R/CD-RW playback; digital volume control for precise level adjustments; Digital Mega Bass low-end sound reinforcement 33 hours playback with 2 AA batteries (not included)