Which product holds the Guinness World Record for the fastest-selling consumer electronics item, selling at a rate of 231,000 units per day in its first 80 days on the market?

The world of product launches has seen some truly remarkable records set over the years. From the fastest-selling consumer items to the most expensive marketing campaigns, companies constantly push boundaries to make their mark in history. Test your knowledge about the most extraordinary product launches that earned their place in the record books. Do you know which strategies led to unprecedented success and which products broke all previous sales records?

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Apple iPhone X (2017)
Sony PlayStation 4 (2013)
Nintendo DS handheld game system (2004)
Samsung Galaxy S8 smartphone (2017)