Samsungs latest health tracking app for its Galaxy Watch werables promises easy, on the go blood pressure monitoring. The trick is that you need to calibrate the initial measurement with a stand-alone blood pressure monitor. During that procedure, you'll need to start your Galaxy Watch's blood pressure tacking feature which relies on the optical heart-rate sensor to measure your blood pressure through pulse wave analysis. Samsung recommends using the Galaxy Watch Active2 for the monitoring and that you repeat the calibration process once a month to ensure accurate readings.
The new Samsung Health Monitor app is still in development but has been cleared by the South Korean Ministry of Food and Drug Safety (MFDS) meaning it should be available soon.
Once you have gone through the initial setup you will be able to select the measure my blood pressure setting from your Galaxy Watch. The accompanying smartphone app also allows users to track and compare blood pressure values for longer time periods and gives tips on pulse data.