“Does this watch track ECG rhythm and sleep patterns”

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• Yes it does. It can also track oxygen saturation while you sleep as well as detect snoring.

  Answered by VABeachBaby 4 years ago

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• Yes, not by default though. You have to tell it you want to track your sleep via the app. For ECG it doesn't run unless prompted via the watch.

  Answered by BGD2 4 years ago

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• Yes, Ladybug! The Galaxy Watch4 is able to track ECG rhythm and sleep patterns. Thank you for taking the time to ask this question. ^Kayla

  Answered by Samsung 4 years ago

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