Which product holds the Guinness World Record for the fastest-selling consumer electronics item, selling at a rate of 196,000 units per day after its launch?

Product launches can make or break a brand's success, but some have achieved legendary status by setting incredible world records. From the fastest-selling consumer electronics to the most units sold in a single day, these product debuts have earned their place in the retail history books. Test your knowledge about the most extraordinary product launch that broke all expectations and set an official Guinness World Record!

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Apple iPhone 6/6 Plus (2014)
Nintendo DS handheld game console (2004)
Sony PlayStation 4 (2013)
Amazon Echo Dot (2016)