How do I measure blood oxygen saturation (on select devices)?

Open the Blood Oxygen Saturation app, and start the blood oxygen saturation measurement as instructed.

For the most accurate measurements, please check the following:

  1. Wear the device about one finger away from the carpal (bones of your wrist).
  2. Wear the device tightly, with an appropriate sense of pressure.
  3. Place your arm on a tabletop or a stationary surface, with the device screen facing up.
  4. Remain still during measurement and focus on measurement.
  5. Factors such as hair, tattoo, shaking, low temperature, and incorrect wearing of the watch may affect measurement results, and even lead to measurement failure.

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