The PlayStation Portable is a handheld game console developed by Sony. It primarily competed with the Nintendo DS, as part of the seventh generation of video games. The PlayStation Portable became the most powerful portable system when launched, just after the Nintendo DS in 2004. It was the first real competitor to Nintendo's handheld domination, where many challengers, such as SNK's Neo Geo Pocket and Nokia's N-Gage, failed. Its GPU encompassed high-end graphics on a handheld, while its 4.3 inch viewing screen and multi-media capabilities, such as its video player and TV tuner, made the PlayStation Portable a major mobile entertainment device at the time.