Panasonic SL-CT710 Slim CD / MP3 Player Ultra-thin (.63-inch) portable CD player with MP3 playback and No Skip protection (CD: 45 seconds backup, 128 kbps MP3: 400 seconds backup) Up to 117 hours battery life with MP3 CD playback from 2 Ni-Cd rechargeable batteries (supplied) and 2 AA alkaline batteries (not included) ID3 tag support for MP3 artist/track info Includes wired remote control with LCD and optional-use external battery case 5-preset equalizer including S-XBS+ bass boost