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 industry has seen some truly remarkable accomplishments that have earned their place in the Guinness World Records. From the largest stores to the most expensive products ever sold, these retail achievements push the boundaries of what we thought possible. Test your knowledge about these extraordinary retail world records that have shaped consumer history and defined the limits of retail innovation and strategy.

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Apple iPhone 6
Microsoft Kinect for Xbox 360
Sony PlayStation 4
Samsung Galaxy S3