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

The retail world has seen many extraordinary products that have broken world records in various ways - from sales volumes to physical attributes. These record-breaking items often represent milestones in product design, marketing strategies, or consumer behavior. Test your knowledge about famous products that have earned their place in the Guinness World Records and retail history!

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Apple iPhone (first generation)
Microsoft Kinect for Xbox 360
Sony PlayStation 2
Nintendo Switch