"If you have an Apple Watch Series 9, 10, or Ultra Watch 2 purchased in the US in the past year, you will receive blood oxygen sensing via a software update."
"Apple's watchOS 11.6.1 allows users to see blood oxygen levels in the Health app's Respiratory section after updating their iPhone to iOS 18.6.1."
"A recent US Customs ruling resolved a dispute with Masimo, which claimed Apple violated a patent related to optical blood monitoring, resulting in a judged infringement."
"The blood oxygen sensing feature became more crucial during the Covid-19 pandemic, leading to increased awareness and usage of pulse oximeters."
Blood oxygen sensing returns to Apple Watch Series 9, 10, and Ultra Watch 2 in the US following a software update. Users must update their iPhone to iOS 18.6.1 and the watch to watchOS 11.6.1 to see this feature. The update is a result of a US Customs ruling related to a patent infringement lawsuit by Masimo against Apple. The blood oxygen sensing feature had been omitted from the latest Apple Watch models until this update, addressing a key feature users have missed during the pandemic and beyond.
Read at WIRED
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