The PlayStation Portable is a handheld game console made by Sony.
Announced in 2003, it was first unveiled in May 2004. It was released in Japan, December 2004. USA, March 2005

People use it to play video games, watch videos, listen to music, view images, and surf the web using wi-fi.

Im suprised people wouldn't know what a psp is. But in other words it's the best portable gaming consle out. It has the best graphics and gameplay, with other cool features as well.

Recently Sony announced an modified improved version of PSP, which is expected to release next month.