According to a fresh report by IDC, Apple shipped more than 46 million wearables in 2018 out of a total of 172.2 million such devices sold worldwide. Smartwatches accounted for almost 30 percent of the entire wearable market and Apple's growth is expected to continue thanks to the Watch Series 4 smartwatch.
https://www.notebookcheck.net/Apple-dominated-the-wearable-market-in-2018.412691.0.html