The signals we use to compute the Oxygen Saturation percentage are generally very weak. These signals can very easily get distorted under any of the following conditions:

  • When the wristband isn't tight enough
  • When there is slight hand movement during the recording session
  • When there is ambient light

We suggest avoiding those scenarios to increase your chances of getting your Oxygen Saturation.

One way to make sure that the ambient light is not interfering with the recording and improve signal quality is to wear a sweatband over the wristband.

Additionally, wearing a sweatband while sleeping will ensure that you are getting absolutely the BEST signal quality!

If you're unable to capture oxygen saturation data during a manual biometrics recording, please check your next sleep session.

If there is no SpO2 data from your sleep session, please email us at

If there is SpO2 data from your sleep session, the manual biometrics readings will work after a few more tries.

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