Samsung has launched blood pressure and electrocardiogram (ECG) tracking for the Galaxy Watch5 starting 25 Jan in Malaysia.
Galaxy Watch5 Blood Pressure Measurement

The Galaxy Watch5 is built with a Photoplethysmogram (PPG) sensor inside. You can record your systolic and diastolic pressure, as well as your pulse rate, and record it in the Samsung Health Monitor Blood Pressure app.
Take An ECG Reading

Sensors are attached to the skin to detect the electrical signals produced by your heart each time it beats and the information is recorded on a graph. The Galaxy Watch is built with an ECG sensor, while you can use the Samsung Health Monitor ECG app to create, record, save, and export ECG data.
How To Calibrate

For your Galaxy Watch to work optimally, do follow these important, detailed instructions on how to set up and calibrate your Galaxy Watch, Galaxy smartphone and Samsung Health Monitor app at Samsung’s official website.
Additionally, with your Galaxy Watch, you can measure your Body Composition, which shows you your body fat percentage, muscle mass, and body water percentage.
