Using the Ring22• You can add sleep records manually. At the bottom of the sleep informationscreen, tap Add sleep record, enter the time you slept and woke up, and then tapSave.• When you are inactive or in certain postures while wearing the Ring, it maymistakenly detect that you are sleeping and record sleep data. To delete themistakenly recorded sleep data, tap → Delete on the sleep information screen.Measuring your blood oxygen level while sleepingSet to measure your blood oxygen level continuously while sleeping. You can measureyour blood’s oxygen level to check whether your blood is properly delivering oxygen tothe different parts of your body.This feature is only for your general wellness and fitness. Therefore, do not use itfor medical purposes, such as diagnosing the symptoms, treatment, or preventionof disease.Blood oxygen level measurements may vary depending on the measurementmethod and the environment they are taken in.1 On the connected phone, open the Galaxy Wearable app.2 Tap Health settings → Sleep.3 Tap the Blood oxygen during sleep switch to turn it on.Your sleeping blood oxygen level will be measured along with your other sleeprecords when you sleep while wearing the Ring.• If your blood oxygen level is measured continuously while sleeping, the batterywill drain more quickly than normal.• You can see the light because of the flickering sensor while measuring yourblood oxygen level.• The Ring may measure your blood oxygen level even if you are not sleepingbecause your Ring can recognise your sleep status even while reading books orwatching TVs or movies.• Wear the Ring on a finger where it can fit firmly to ensure that you will not createspace between your finger and the Ring when turning over in your sleep.