https://www.apple.com/newsroom/2025/08/an-update-on-blood-oxygen-for-apple-watch-in-the-us/


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QUICK READ August 14, 2025

An update on Blood Oxygen for Apple Watch in the U.S.

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[https://nr.apple.com]
Apple will introduce a redesigned Blood Oxygen feature for some Apple
Watch Series 9, Series 10, and Apple Watch Ultra 2 users through an
iPhone and Apple Watch software update coming later today.
Users with these models in the U.S. who currently do not have the
Blood Oxygen feature will have access to the redesigned Blood Oxygen
feature by updating their paired iPhone to iOS 18.6.1 and their Apple
Watch to watchOS 11.6.1. Following this update, sensor data from the
Blood Oxygen app on Apple Watch will be measured and calculated on
the paired iPhone, and results can be viewed in the Respiratory
section of the Health app. This update was enabled by a recent U.S.
Customs ruling.
There will be no impact to Apple Watch units previously purchased
that include the original Blood Oxygen feature, nor to Apple Watch
units purchased outside of the U.S.
Apple's teams work tirelessly to create products and services that
empower users with industry-leading health, wellness, and safety
features that are grounded in science and have privacy at the core.
Apple Watch Series 9, Series 10, and Apple Watch Ultra 2 also offer
users irregular rhythm notifications, the ECG app, Sleep Apnea
Notifications, Fall Detection, sleep tracking, wrist temperature
sensing, the Vitals app, the Noise app, the Medications app, and the
Mindfulness app, among many other helpful tools, helping users live a
healthier life.

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