Apple Watch Blood Oxygen Feature Redesign Rolls Out in the US

Apple is releasing a redesigned Blood Oxygen feature for select Apple Watch Series 9, Series 10, and Apple Watch Ultra 2 users in the US via an iOS 18.6.1 and watchOS 11.6.1 update. This follows a recent US Customs ruling, allowing blood oxygen data processing on the paired iPhone and display in the Health app's Respiratory section. The update doesn't affect previously purchased watches with the original feature or those bought outside the US.
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