Playstation 3 from: wikipedia

The PlayStation 3 commonly abbreviated PS3 is the third home video game console produced by Sony Computer Entertainment, beating the PlayStation 2 and PlayStation 1 as part of the PlayStation series. The PlayStation 3 competes with Microsoft's Xbox 360 and Nintendo's Wii as part of the seventh generation of video game consoles. A major difference  the PlayStation 3 has that its opponents don't have is its unified online gaming service, the PlayStation Network, which is different than Sony's former policy of relying on game developers for online play. Other major features of the console include its robust multimedia capabilities, connectivity with the PlayStation Portable, and its use of  HD disc format, Blu-ray Disc, as its primary storage medium. The PS3 was also the first Blu-ray 2.0-compliant Blu-ray player on the market. The PlayStation 3 was first released on November 11, 2006 in Japan, November 17, 2006 in North America, and March 23, 2007 in Europe and Oceania. Two SKUs were available at launch: a basic model with a 20 GB hard drive (HDD), and a premium model with a 60 GB hard drive and several additional features (the 20 GB model was not released in Europe or Oceania). Since then, several revisions have been made to the console's available models.