The Apple Watch was the best selling smartwatch in the fourth quarter of 2017. It was also the highest selling wearable device during the entire year of 2017, reveals a new research from IDC.

The research firm estimates Apple to have shipped 8 million units of the Apple Watch in the fourth quarter of last year. In comparison, Apple shipped only 5.1 million units of the Apple Watch in the fourth quarter of 2016. The overall market share for Apple also increased from 14.4 percent at the end of Q4 2016 to 21 percent at the end of Q4 2017.