SpO₂

• Is the SpO₂ automatic?
• Can SpO₂ detect hypoxemia?
• I can't find the SpO₂ on my App data page.
• I've tried to perform a SpO₂ measurement on my Watch, but a message about BP calibration appeared on the screen. Does the SpO₂ needs to be calibrated?
• How can I check past records of my SpO₂?
• What is a normal oxygen saturation level value?
• What is the SpO₂ feature, and what can I do with it?