The PlayStation Portable (officially abbreviated PSP) is a handheld game console manufactured and marketed by Sony Computer Entertainment.[6] Development of the console was announced during E3 2003,[7] and it was unveiled on May 11, 2003 at a Sony press conference before E3 2004.[8] The system was released in Japan on December 12, 2004,[9] in North America on March 24, 2005,[10] and in the PAL region on September 1, 2005.[11]
The PlayStation Portable is the first handheld video game console to use an optical disc format, Universal Media Disc (UMD), as its primary storage medium.[12][13] Other distinguishing features of the console include its large viewing screen,[14] robust multi-media capabilities,[15] and connectivity with the PlayStation 3, other PSPs, and the Internet.[16][17]
Sales of the PSP have (with cyclical exceptions) lagged behind its main competitor, the Nintendo DS.[18] Nevertheless, the console is "the most successful non-Nintendo handheld game system ever sold".[19] After the release of a remodeled, slimmer, and lighter version of the PlayStation Portable, titled Slim & Lite, in early September 2007, sales quadrupled in the United Kingdom the following week and increased by nearly 200% in North America for the month of October. The Slim & Lite had a minor redesign including a new screen and inbuilt microphone, and has since been followed by the PSP Go
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