Samsung Galaxy Watch Active 2 and Galaxy Watch 3 users in the United States can soon use their smartwatches to take ECG readings. The functionality will be available via an update to the Samsung Health Monitor app. The app can also be configured to send an ECG report to a physician automatically.
https://www.notebookcheck.net/Galaxy-Watch-3-and-Galaxy-Watch-Active-2-get-ECG-functionality-in-the-United-States.495165.0.html