Big news, Apple Watch fans: The blood oxygen monitor is back.

Apple made the announcement in a short press release on Thursday. The company says the feature is "redesigned," and will roll out to Series 9, Series 10, and Apple Watch Ultra 2 users through a software update later today.

Apple initially rolled out the blood oxygen monitor with the Apple Watch Series 6, as a way for users to both passively and actively monitor their blood oxygen levels throughout the day. Shortly after, however, Masimo, a company that produces pulse oximeters, sued Apple in 2020 alleging patent infringement. Apple was briefly banned from selling the Apple Watch Series 9 and Ultra 2 in the United States in January 2024, and, as a result, removed blood oxygen capabilities from these watches via a software updat

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