Original: Kinect holds the Guinness World Record of being the "fastest selling consumer electronics device". It sold an average of 133,333 units per day with a total of 8 million units in its first 60 days.
Simplified: The Kinect was named the "Fastest selling consumer electronics device" by the Guinness World Records, selling an average of 133,333 kinects per day with a total of 8 million units in its first 60 days.