I've tried to perform a SpO₂ measurement on my Watch, but a message about BP calibration appeared on the screen. What does it mean?

To be able to correctly start measuring your oxygen saturation level (SpO₂), you need to take a blood pressure calibration before.

When you haven't done the blood pressure calibration, the following message will display on the Watch screen when you try to measure your oxygen level:

BP calibration...

Please go to the app first to calibrate blood pressure.

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