According to an early estimate, the Xbox One sold over 700,000 units in its first week.
This is according to data collated from VGChartz. The data was for the week ending the 23rd of November so the Xbox One sold pretty well in its first two days on sale in the USA. To be exact, the console sold 732,569 units.
The top selling game was Call of Duty: Ghosts on Xbox One. The game sold 495,223 units overall. Call of Duty: Ghosts on Xbox 360 came in second place while The Legend of Zelda: A Link Between Worlds on 3DS placed third.
