Can I measure blood oxygen with my Apple Watch?

The Apple Watch Series 6 ships with an oximeter sensor that can monitor blood oxygen levels. The Series 6 Watch will notify users when their blood oxygen falls below a certain threshold which is known as Hypoxemia. Low blood oxygen is typically linked to issues with breathing or circulation and can lead to different health problems such as your heart or brain not functioning properly. This can cause risk of respiratory or cardiac arrest and other complications.

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