A handheld device with a built-in DVD drive and flip-over lid that contains a screen, typically 6" to 10" in size. It may support rear seat passenger viewing, in which case the unit is hung upside down from the back of the front seat head rest, and a switch flips screen content 180 degrees. CDs can also be played, and players may support MP3 and other formats. See portable media player
A Small DVD Player
DVD players such as this one with a 7" screen began to emerge around the turn of the century, costing USD $1,000. By 2006, players with the same size screen were available in the $100-200 range. The DVD in the picture is for size comparison.