![]() ![]() Normal SpO2 values vary between 90 and 100%, and readings appear on the watch and in the app.Īn ECG is the best way to detect atrial fibrillation (AFib), a highly prevalent heart arrhythmia. To deliver the percentage of blood oxygen, or SpO2, ScanWatch uses a multi-wavelength PPG sensor to emit and measure red and infrared reflections of blood vessels in the wrist. ScanWatch monitors heartbeat automatically so it can send notifications if irregular rhythms are detected it will then advise the wearer to record an electrocardiogram (ECG). Continuous heart rate monitoring is activated and recorded when using Workout Mode. ![]() A notification can be sent to the user in the case of a high or low resting heart rate episode. The optical sensor keeps tabs on heart rate consistently, while also conserving battery life by activating periodically around the clock. Record an ECG at any time thanks to a mirror-polished serrated bezel that acts as an electrode. ![]()
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