https://www.polygon.com/2018/1/4/16849094/nintendo-switch-sales-numbers

Nintendo has announced that its portable/console hybrid is now the fastest-selling console in U.S. history, according to its own internal sales estimates. The Nintendo Switch is even beating the sales of the original Wii in the United States.

“The home console that players can take wherever they go launched March 3, 2017, and in 10 months has sold more than 4.8 million units in the United States, according to Nintendo’s internal sales figures,” Nintendo stated. “That’s the highest total for the first 10 months of any home video game system in U.S. history, surpassing Nintendo’s own Wii system, which was the previous record holder with more than four million units sold during the same timeframe.”