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Investing.com -- Apple Inc. is bringing back its blood oxygen tracking feature for Apple Watch users in the United States after a lengthy legal dispute with Masimo Corp.
The feature, which was removed in late 2023 due to a patent infringement lawsuit and a U.S. Customs injunction, will return through iOS 18.6.1 and watchOS 11.6.1 software updates released Thursday.
Apple has implemented a workaround that processes blood oxygen data differently than before. Instead of displaying results directly on the watch, sensor data will now be measured and calculated on the paired iPhone, with results viewable in the Respiratory section of the Health app.
"This update was enabled by a recent U.S. Customs ruling," Apple stated in its announcement.
The restoration applies to Apple Watch Series 9, Series 10, and Apple Watch Ultra 2 users in the U.S. who purchased models with the blood oxygen feature disabled. Users with previously purchased watches that already include the original blood oxygen feature will not be affected, nor will Apple Watch units purchased outside the United States.
Apple shares showed little movement in premarket trading in New York following the announcement.
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