Navigate to Settings. From the smart watch's Home screen, press the Home key ( Power key), and then navigate to and open Settings. Alternatively, you can swipe down from the top of the screen to open the Quick Settings panel, and then tap the Settings icon. The Eject water feature will turn on after you turn off Water lock mode.
2 Scroll down the list of options and tap on Blood Oxygen. 3 Follow the on-screen instructions then tap on Measure. If you would like to add the Blood Oxygen function as a widget check out our guide Adding a Widget to my Samsung Watch for step-by-step instructions. 4 It is recommended to place your hand on a table and near your heart.dEkNe.