Which product holds the Guinness World Record for 'fastest-selling consumer electronics device,' selling 8.3 million units in its first 60 days on the market?

The Guinness World Records has documented numerous product launches that broke records for sales, attendance, or scale. These historic product debuts often represent watershed moments in retail and marketing history. Test your knowledge about these landmark product launches that earned their place in the record books!

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Apple iPhone 6/6 Plus
Sony PlayStation 4
Microsoft Kinect for Xbox 360
Nintendo Switch