The PlayStation Portable (Japanese: プレイステーション・ポータブル Hepburn: Pureisutēshon Pōrutaburu^?, officially abbreviated PSP) is a handheld game console manufactured and marketed by Sony Corporation^[4] Development of the console was announced during E3 2003,^[5] and it was unveiled on May 11, 2004, at a Sony press conference before E3 2004.^[6] The system was released in Japan on December 12, 2004,^[7] in North America on March 24, 2005,^[8] and in the PAL region on September 1, 2005.^[9]

The PlayStation Portable is the only handheld video game console to use an optical disc format, Universal Media Disc (UMD), as its primary storage medium.^[10][11] Other distinguishing features of the console include its large viewing screen,^[12] robust multi-media capabilities,^[13] and connectivity with thePlayStation 2, PlayStation 3, other PSPs and the Internet.^[14][15]

After the release of a slimmer, lighter, remodeled version of the PlayStation Portable (the PSP-2000/"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.^[16][17] This model was later replaced by another remodeling, the PSP-3000, which included a new screen and an inbuilt microphone. Since then, a complete redesign called the PSP Go has been released, which was sold alongside the PSP-3000. In 2011 a budget model, the PSP-E1000, was released. The PSP line was succeeded by the PlayStation Vita, released in December 2011 in Japan, and in February 2012 in North America, Europe and Australia, respectively.

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