Changing the Pulse Oximeter Tracking Mode

You can manually begin a pulse oximeter reading by viewing the pulse oximeter widget.

  1. Hold .
  2. Select > Wrist Heart Rate > Pulse Ox > Tracking Mode.
  3. Select an option:
    • To turn on measurements while you are inactive during the day, select All Day.

      NOTE: Turning on all-day tracking mode 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 Off.