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Still works on my 2023 Ultra 2. Only doesn't work on watches sold since the court ruling in January 2024.
same here. The ban was for S9 and Ultra 2 specifically starting some day in Jan 2024, every model sold before that date was NOT impacted
 
Now this is strange, this is on the UK site but also on the Belgian site. What’s even stranger that on Watch 9 it is also gone.
 

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I'm actually hesitant to get the 10 because of this...Apple, you're one of the biggest companies - you can pay for licensing to get the sensor back.
Why? The feature is not that accurate, so you're never going to be using it to closely monitor accurate blood O2. Like most Apple Watch features, the most it can do is show you trends if there is a major change in your readings over a period of days or weeks. And its arguable that a major change in blood O2 trend is going to be noticed by you long before your watch or the Health app brings it to your attention.
 
Why? The feature is not that accurate, so you're never going to be using it to closely monitor accurate blood O2. Like most Apple Watch features, the most it can do is show you trends if there is a major change in your readings over a period of days or weeks. And its arguable that a major change in blood O2 trend is going to be noticed by you long before your watch or the Health app brings it to your attention.
I just looked in my Health app and it says over the past week the range for my blood oxygen was 93-99%. If it was really accurate and I have no health issues shouldn’t it be closer to 99% all the time?
 
Now this is strange, this is on the UK site but also on the Belgian site. What’s even stranger that on Watch 9 it is also gone.
It is there. Try incognito mode. I found that when I clicked on an international store it didn’t actually change.
This is the UK version of the website:

IMG_0049.jpeg
 
Why? The feature is not that accurate, so you're never going to be using it to closely monitor accurate blood O2. Like most Apple Watch features, the most it can do is show you trends if there is a major change in your readings over a period of days or weeks. And its arguable that a major change in blood O2 trend is going to be noticed by you long before your watch or the Health app brings it to your attention.
I get that but I figure it would help with sleep apnea detection (along with the accelerometer). Plus Apple sees a benefit in it or else they would have removed it from the Apple Watch 10 across the globe.
 
Just curious, what do you use the sensor for? I have an Ultra 1 that I’m replacing with a S10. I’ve never used the O2 sensor that I know of, but now I’m wondering if I’m losing something I use without noticing?
When I got long covid my oxygen went from 95+ to the low 90’s or high 80’s before I put myself in the hospital. I hate doctors and hospitals but know I needed help.
 
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Why? The feature is not that accurate, so you're never going to be using it to closely monitor accurate blood O2. Like most Apple Watch features, the most it can do is show you trends if there is a major change in your readings over a period of days or weeks. And its arguable that a major change in blood O2 trend is going to be noticed by you long before your watch or the Health app brings it to your attention.
That’s a great point. And if you all don’t know, serious oxygen finger-clip style sensors have fallen drastically in price. I bought the Braun YK-81CEU for just €22 and it works great.
 
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I find it impossible to imagine that a European Apple Watch would not operate on US cellular. This is Apple in 2024, not BlackBerry in 1998.

If you bought it in Canada/Mexico you would be fine, but the European/Asian Cellular Apple Watch do support different LTE bands than the North American model. Specifically, they're missing the 700mhz frequency (LTE Bands 12-17) which would significantly degrade the cellular performance. The low range spectrum is partly the reason why Verizon/AT&T had superior rural coverage in the 4G era.

Apple Watch - Carriers - Apple
 
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So, I have a series 8 that is still running watchOS 9.X.X. Will I lose the BO sensor functionality if I upgrade the watch to watchOS 11, which I will have to do if I want it to pair with my phone after I update that to iOS 18?
I have the beta of iOS 18 on my phone and iOS 11 on my S7 watch and O2 sensing still works FYI.
 
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French Apple site shows no signs of O2 sensor at all in AW10. If so, not so compelling to buy.
 

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I was strongly considering getting a S10 but honestly I just snagged a SS Series 8 for 199 last week in that Walmart sale and I’m completely happy with it. I like the idea of the larger screen, faster charging etc but not enough to pay full price for a new model that lacks a significant feature I rely on for cardio tracking.
 
I noticed in the keynote that they did not mention it, and that the Vitals app in the renders has the blood oxygen metrics absent from it. Btw most of the talking points in the Keynote presentation from Apple are mostly intended for the people in the United States. 🇺🇸
 
I’ve never used the O2 sensor that I know of, but now I’m wondering if I’m losing something I use without noticing?

Good check on lung and heart functioning — during exercise, regular activities, and for general health.

As we age, those become even more important. In an era of resurgent COVID, oxygen levels are useful. Blood oxygen monitoring is also key to sleep apnea detection which affects people of all ages.

The Watch via the iPhone also provides a VO2 Max measure which gives feedback on your cardio fitness — and whether you are pushing yourself sufficiently while exercising.

The feature is not that accurate, so you're never going to be using it to closely monitor accurate blood O2

In fact, medical researchers have confirmed that it is quite accurate. The problem from my reading of the research is that it slightly under-states oxygen levels at high levels (mid-to-upper 90s) while overstating it at lower levels (high 80s and low 90s). That is the exact opposite of what one would want, but it still provides a relatively close and fairly useful gauge.

See, e.g.,

“Accuracy of the Apple Watch Oxygen Saturation Measurement in Adults: A Systematic Review”​




“Study finds Apple Watch blood oxygen sensor is as reliable as ‘medical-grade device’”​

 
so this is the first year that I didn't get the new apple watch on the first day I can order specifically because of this. I go to colorado 3 times a year and while I don't need realtime pulse ox, i like to see what it is when i'm sleeping and of course during the trips. It does drop significantly.

I am probably an edge case though but I'm not going to get a new watch with less functionality on something I use pretty regularly. at least as much as I use speakers on the apple watch.

and the way it happens is I buy the new one and my old ones get handed down to my family. In fact all of them are still working but apparently the apple watch 1 doesn't hold much of a charge anymore.

Oh well apple, I hope you either get the court case settled quickly, or you buy some other tech to put in the watch but no sale for me at this point.
 
The Watch via the iPhone also provides a VO2 Max measure which gives feedback on your cardio fitness — and whether you are pushing yourself sufficiently while exercising.
Not sure BO is required for VO2 estimation. Garmin devices have been doing VO2max estimates for years without BO measurement.
 
Good check on lung and heart functioning — during exercise, regular activities, and for general health.

As we age, those become even more important. In an era of resurgent COVID, oxygen levels are useful. Blood oxygen monitoring is also key to sleep apnea detection which affects people of all ages.

The Watch via the iPhone also provides a VO2 Max measure which gives feedback on your cardio fitness — and whether you are pushing yourself sufficiently while exercising.



In fact, medical researchers have confirmed that it is quite accurate. The problem from my reading of the research is that it slightly under-states oxygen levels at high levels (mid-to-upper 90s) while overstating it at lower levels (high 80s and low 90s). That is the exact opposite of what one would want, but it still provides a relatively close and fairly useful gauge.

See, e.g.,

“Accuracy of the Apple Watch Oxygen Saturation Measurement in Adults: A Systematic Review”​




“Study finds Apple Watch blood oxygen sensor is as reliable as ‘medical-grade device’”​


One thing that needs to be made clear, the oxygen sensor is accurate but mostly when you manually initiate the reading. The automatic readings the watch takes every few hours can be hugely inaccurate because the sensor does need you to be still in order to work as it’s supposed to. The watch will attempt a reading when you’re still but if you move for any reason while it’s doing so you’ll ruin the results. I’ve had readings as low as 70% because of this.
 
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