Samsung SM-R890 User Manual page 62

Apps and features
Measuring your blood oxygen level while sleeping
Set to measure your blood oxygen level continuously while sleeping.
1
(Samsung Health) on the Apps screen.
Tap
2
Tap Settings → Measurement.
3
Tap the switch under Blood oxygen during sleep to activate it.
Your sleeping blood oxygen level will measured along with your other sleep records when
you sleep while wearing the Watch.
• If you set it to measure your blood oxygen level continuously while sleeping, the
battery will drain more quickly than normal.
• You can see the light due to the flickering optical heart rate sensor while measuring
your blood oxygen level.
• The Watch may measure your blood oxygen level even if you are not sleeping
because your Watch can recognise your sleep status even while reading books or
watching TV or movies.
• Wear the Watch firmly, following the wearing guide on the screen, ensuring that you
are not making space between your wrist and the Watch due to turning over in your
sleep.
62