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Apple Restores Blood Oxygen Tracking to Latest Watches

8/19/2025

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Summary

Story summary

Apple has restored blood oxygen tracking on the Apple Watch Series 9, Series 10, and Ultra 2 after resolving a patent dispute with Masimo.
The feature, previously unavailable in the U.S., is now accessible via software updates (iOS 18.6.1 and watchOS 11.6.1).
Blood oxygen data is processed on the paired iPhone and displayed in the Health app's Respiratory section.
This update reintroduces an important health metric for millions of U.S. users.

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Story summary

Apple has restored blood oxygen tracking on the Apple Watch Series 9, Series 10, and Ultra 2 after resolving a patent dispute with Masimo.
The feature, previously unavailable in the U.S., is now accessible via software updates (iOS 18.6.1 and watchOS 11.6.1).
Blood oxygen data is processed on the paired iPhone and displayed in the Health app's Respiratory section.
This update reintroduces an important health metric for millions of U.S. users.