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Changing the Pulse Oximeter Tracking Mode

  1. Hold Top button.
  2. Select Settings > Watch Sensors > Pulse Oximeter > Tracking Mode.
  3. Select an option:

    • To turn on measurements while you are inactive during the day, select All Day.

      NOTE: Turning on pulse oximeter tracking decreases battery life.

    • To turn on continuous measurements while you sleep, select During Sleep.

      NOTE: Unusual sleep positions can cause abnormally low sleep-time SpO2 readings.

    • To turn off automatic measurements, select On Demand.

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October 2025
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