Task: Get help about spo2 and normal spo2 levels on the Withings app.
Steps:
Click on the profile icon at the top left corner of the screen.
Click on the settings icon at the top right corner of the screen.
Click on Help in the middle left of the screen.
Click on Help in the middle left of the screen.
Scroll up 
Scroll up 
Click on the first option in frequently asked questions.