Audiovox DVD1680 7-Inch Portable DVD Player
Audiovox DVD Player # DVD1680
I bought this item on sale at Target for use during long car trips for my 13-year-old son to pass the time.  He used it over the Holidays and it worked out great!  It was easy for him to use, and the battery did last 3 1/2 hours.  After that he switched to 12VDC input power.  He used headphones and said the sound quality was excellent.  He watched both full-screen and wide-screen format DVDs.  I highly recommend this unit for traveling.  We did also purchase a padded carrying case at Target, which I also recommend for protection.