Panasonic DVD-LV57 Portable DVD Player Super thin and light design for convenient travel 5-inch diagonal widescreen (16:9) LCD monitor renders proportionally correct widescreen films CD-R and MP3-CD compatible for music as well as movie enjoyment DTS &amp; Dolby Digital surround outputs (not decoding) for immersive digital surround sound when used with a compatible AV receiver Approximately 5 hours battery life with included battery pack (when brightness is set to lowest level; may be shorter depending on conditions of use); 4:3/16:9/zoom screen selector lets you adjust picture size