samsung watch heart monitoring
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Samsung Galaxy watches commonly measure heart rate, ECG/heart rhythm, and blood oxygen (SpO2). They also collect related sleep and activity metrics that inform heart-health insights (for example, sleep stages and activity-based heart-rate data).
Watches analyze pulse data and, if they detect patterns suggestive of atrial fibrillation, they send a notification prompting you to record an ECG for further review.
Samsung watches provide continuous heart-rate tracking during exercise and apply motion-filtering algorithms to reduce movement-related noise, helping improve heart-rate precision during activity.
You need a compatible Samsung Galaxy phone, the Samsung Health app (and a Samsung account). Certain functions—such as ECG—also require the Samsung Health Monitor app downloaded from the Galaxy Store.
Product notes state that heart-rate software functions, SpO2 measurements, and ECG-related apps are not intended for use in medical diagnosis or to replace traditional clinical methods.