Which retail product launch holds the Guinness World Record for 'fastest-selling consumer electronics item'?

While many retail businesses aim to break sales records, some have actually earned official Guinness World Records! From massive product launches to extraordinary store layouts, retailers have found unique ways to earn their place in the record books. Test your knowledge about the intersection of retail achievement and world records with this challenging trivia question!

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Apple iPhone 6/6 Plus (2014) - 10 million units in first weekend
Sony PlayStation 4 (2013) - 2.1 million units in first two weeks
Nintendo Switch (2017) - 1.5 million units in first week
Microsoft Kinect for Xbox 360 (2010) - 8 million units in first 60 days