Use the Samsung Health Monitor app on your Galaxy watch
Samsung Announces FDA-Cleared Irregular Heart Rhythm Notification for Galaxy Watch
How to Measure Your Heart Rate with a Samsung Galaxy Watch
My galaxy heart sensor got moisture in it's one of it's parts and I even don't put in any water now it's heartrate sensor giving me error to clean the sensor :
Best heart rate monitor watch 2024 | Android Central
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The Galaxy Watch can alert you if your heart rate is too low or high - SamMobile
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Measure your ECG with the Galaxy Watch series | Samsung UK