Samsung is finally bringing its blood pressure monitoring feature to Galaxy Watch users in the United States. Starting today, March 31, select Galaxy Watch owners can measure and track their blood pressure right from their wrist using the Samsung Health Monitor app. This has been a long time coming. Samsung has had blood pressure monitoring available in South Korea for years now, and U.S. users have been waiting patiently, for the feature to make its way stateside. Well, the wait is over. Here’s how it works. Your Galaxy Watch uses its internal heart rate sensors to measure both systolic and…