As technology advances you see these types of devices more and more; handheld multi-functioning with a built in digital video player. Sony has revealed the prototype Vaio-speler that has a 3.5-inch display with an unbelievably high resolution.

The device will last for 10 hours continuous MPEG-2 video playback. It can also show photographs which have been stored on the built in 20 gigabyte hard disk. Sony revealed the digital video player at the WPC Expo in Japan, the largest technological unveiling of digital equipment in the world.