APPLE INSIDER
New research shows that 40% of smartwatches sold in the fourth quarter of 2020 were Apple Watches, with the Apple Watch SE and Apple Watch Series 6 selling an estimated 12.9 million between them.

Counterpoint Research, which previously revealed that the iPhone 12 quickly became the world’s best selling 5G phone, now says much the same for the Apple Watch. Overall, sales for smartwatches in Q4 2020 were slightly lower than for the same period in 2019, but Apple increased its share.
Source: APPLE INSIDER