Question

Suddenly there is a big difference from the usual measurements. Is there a reason?

Answer

When measuring, you should be familiar with the precautions and then follow the guide. (the Drawer menu ->  How to use  -> Blood Pressure -> Measuring your blood pressure using your Galaxy Watch) In particular, you should avoid drinking, caffeine, nicotine intake, exercise, and bathing within 30 minutes of measurement. If you are measuring according to the guide and there is a constant difference between normal and measured values, consult your doctor.