Sony has launched its PSP portable entertainment device. The new PSP is everything that a PS2 is and more - and it’s portable. The device has a 4.3 inch screen that is capable of displaying 16.77 million colours at a resolution of 480-by-272 pixels, and can do all sorts of cool tricks like play music and movies, and talk to other devices via wi-fi.

The console went on sale in Japan in December and Sony is hoping to sell 3 million of the devices there and in the U.S. by the end of the month before it goes on sale in Europe and around the world.

Critics, however, are a little skeptical of the device, claiming that its hard-drive memory and its use of a proprietary disk system lets it down. Nevertheless, the PSP launched to thousands of expectant fans - many of whom had queued for hours to get their hands on the device.

"This is all about expanding the market to the older gamers and anyone who likes entertainment." - Jack Tretton, executive vice president of sales at Sony's U.S. games division.