Which product holds the Guinness World Record for fastest-selling consumer electronics item, selling 8 million units in its first 60 days on the market?

Product launches can make history not just for their innovation, but for the astonishing speed at which they fly off shelves. Some products have set world records for their incredible sales velocity, demonstrating both marketing brilliance and consumer enthusiasm. Test your knowledge about the fastest-selling consumer products that earned their place in the record books. Do you know which product broke all previous sales records in its category?

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Apple iPhone 6/6 Plus (2014)
Microsoft Kinect for Xbox 360 (2010)
Sony PlayStation 4 (2013)
Nintendo Switch (2017)