Which product innovation 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 world of retail has seen some extraordinary achievements that have made it into the Guinness World Records. From the largest stores to the most expensive products ever sold, retailers have pushed boundaries in surprising ways. This trivia question focuses on product innovation that broke world records. Test your knowledge about a remarkable retail achievement that changed how we think about everyday products!

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Apple iPhone 6/6 Plus (2014)
Sony PlayStation 4 (2013)
Amazon Echo Dot (2016)
Nintendo Switch (2017)