Blood Oxygen Feature Finally Returning to Apple Watch in the US

Apple today announced that blood oxygen monitoring will return to Apple Watch models in the United States via a software update.

apple watch series 6 blood oxygen monitoring 1
Apple says that its blood oxygen monitoring feature has been "redesigned" for the Apple Watch Series 9, Apple Watch Series 10, and Apple Watch Ultra 2 in the United States. The new solution involves measuring sensor data from the Blood Oxygen app on the Apple Watch and sending it for calculation to a paired iPhone, with the results to be viewable in the Respiratory section of the Health app.

The redesigned blood oxygen monitoring feature will be available as part of iOS 18.6.1 and watchOS 11.6.1. The updates will roll out later today.

Apple Watch models in the United States that include the original blood oxygen monitoring feature and those purchased internationally will remain unchanged, with no need for the workaround solution.

Apple says that the update is enabled by a recent U.S. Customs ruling. Apple has been in a long-running patent dispute with health technology company Masimo over the Apple Watch's Blood Oxygen feature. The conflict intensified in December 2023 when an import ban took effect, which blocked U.S. sales of Apple Watch models with the feature.

Apple paused sales in the U.S. for several days before resuming on January 18, 2024, with the Series 9 and Ultra 2 being sold without blood oxygen monitoring. That arrangement has remained in place since then. The Apple Watch Series 10 launched in September 2024, still lacking the feature. Legal proceedings between Apple and Masimo continue.

Tag: Masimo
Related Forum: Apple Watch

Popular Stories

Apple Wallet ID Illinois

Apple Plans to Expand iPhone Driver's Licenses to These 7 U.S. States

Wednesday December 24, 2025 8:40 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future. To set up the...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Launching Next Year With These 12 New Features

Tuesday December 23, 2025 8:36 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another nine months, there are already plenty of rumors about the devices. Below, we have recapped 12 features rumored for the iPhone 18 Pro models. The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras Under-screen Face ID Front camera in...
iOS 26

iOS 26.2 Adds These 8 New Features to Your iPhone

Monday December 22, 2025 8:47 am PST by
Earlier this month, Apple released iOS 26.2, following more than a month of beta testing. It is a big update, with many new features and changes for iPhones. iOS 26.2 adds a Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. Below, we have highlighted a total of eight new features. Liquid Glass Slider on Lock Screen A new slider in the Lock...
maxresdefault

10 Mac Apps Worth Trying in 2026

Wednesday December 24, 2025 9:27 am PST by
2026 is almost upon us, and a new year is a good time to try out some new apps. We've rounded up 10 excellent Mac apps that are worth checking out. Subscribe to the MacRumors YouTube channel for more videos. Alt-Tab (Free) - Alt-Tab brings a Windows-style alt + tab thumbnail preview option to the Mac. You can see a full window preview of open apps and app windows. One Thing (Free) -...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
Foldable iPhone 2023 Feature Iridescent Search

Samsung Developing 'Wide Fold' With iPhone Fold-Like Design Ahead of Apple's 2026 Launch

Tuesday December 23, 2025 11:55 am PST by
Samsung is working on a new foldable smartphone that's wider and shorter than the models that it's released before, according to Korean news site ETNews. The "Wide Fold" will compete with Apple's iPhone Fold that's set to launch in September 2026. Samsung's existing Galaxy Z Fold7 display is 6.5 inches when closed, and 8 inches when open, with a 21:9 aspect ratio when folded and a 20:18...
iOS 26

iOS 26.3 Brings AirPods-Like Pairing to Third-Party Devices in EU Under DMA

Monday December 22, 2025 3:20 pm PST by
The European Commission today praised the interoperability changes that Apple is introducing in iOS 26.3, once again crediting the Digital Markets Act (DMA) with bringing "new opportunities" to European users and developers. The Digital Markets Act requires Apple to provide third-party accessories with the same capabilities and access to device features that Apple's own products get. In iOS...
iphone fold 3d print

Have a 3D Printer? You Can Make Your Own iPhone Fold Dummy

Tuesday December 23, 2025 1:31 pm PST by
Apple is working on a foldable iPhone that's set to come out in September 2026, and rumors suggest that it will have a display that's around 5.4 inches when closed and 7.6 inches when open. Exact measurements vary based on rumors, but one 3D designer has created a mockup based on what we've heard so far. On MakerWorld, a user named Subsy has uploaded a 1:1 iPhone Fold replica (via Macworld), ...
iPhone SE Cosmopolitan Clean

Apple Discontinued These 25 Products This Year

Wednesday December 24, 2025 7:24 am PST by
With the end of 2025 near, the time has come to look back at the devices and accessories that Apple discontinued throughout the year. Most of the products that were discontinued this year were simply replaced by a new model with an updated chip. However, the iPhone SE line was entirely discontinued when the iPhone 16e launched, and the iPhone Plus line is being phased out. Below, we have...

Top Rated Comments

Callander Avatar
19 weeks ago


Attachment Image
Score: 34 Votes (Like | Disagree)
HouseLannister Avatar
19 weeks ago
Now bring on the blood sugar and blood pressure measuring that has been rumored forever.
Score: 20 Votes (Like | Disagree)
jameswilby Avatar
19 weeks ago
Processing on the phone… Almost certainly how they’re getting around it. Likely the trademark will have been about measuring and processing on device. So bring in a second device and maybe it’s no longer infringing? Just a thought
Score: 19 Votes (Like | Disagree)
vertsix Avatar
19 weeks ago
FINALLY!!!

I hope this doesn’t get overruled again though. :p
Score: 17 Votes (Like | Disagree)
JeziLondon Avatar
19 weeks ago
Ridiculous that you can’t see results on the watch itself…
Score: 17 Votes (Like | Disagree)
ghostface147 Avatar
19 weeks ago
The point is to see it on your watch, not have to look on the phone. Of course I’m on watchOS 26, so I may not see it until final release.
Score: 15 Votes (Like | Disagree)