Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

satchmo

macrumors 601
Aug 6, 2008
4,975
5,627
Canada
Not to say it's a bad thing, but wearing a smartwatch or iWatch isn't an intuitive approach for sleep analysis.

Isn't intuitive?
1) Put watch on wrist.
2) Go to sleep

Perhaps you'd be correct if you suggested the Apple Watch isn't as accurate. But who wants to go through attaching this to ourselves every night? ?

1583761861523.png
1583761945086.png
 

PostApple2016BrainWash

macrumors 6502
Nov 11, 2019
472
178
Actually it's not. I have been doing it for years now and it reports my sleep very well and is an important part of my health management.
[automerge]1583759580[/automerge]

You know the Apple iWatch 4-5 series battery is just horrible and need more than 2 hours to fully charge. Conversely, oppo watch is capable of recharging from 0 up to 50% under 20 minutes.
 
Last edited:

yossi

macrumors 6502
Nov 26, 2004
315
1,085
While I hope this feature will be available for Series 4 watches, the more interesting part of this article is that 9to5mac got their hands on a part of iOS14. Is there more to come?

I think this will require new hardware, not simply a software update. The o2 sensors work by projecting light through the skin and I dont think the existing heart rate hardware can be used in this manner. But who knows, that would be great if it did
 

PostApple2016BrainWash

macrumors 6502
Nov 11, 2019
472
178
I think this will require new hardware, not simply a software update. The o2 sensors work by projecting light through the skin and I dont think the existing heart rate hardware can be used in this manner. But who knows, that would be great if it did

The battery life is going to be even worse.
 

phgreer

macrumors regular
Jul 18, 2002
229
162
Greenville, SC
Not to say it's a bad thing, but wearing a smartwatch or iWatch isn't an intuitive approach for sleep analysis.


I don't understand. I use my apple watch for sleep tracking already using the autosleep app. Seems fairly accurate enough. I don't mind the watch at all when I am sleeping either. I don't even know it's there. Seems very intuitive to me.
 

himanshumodi

macrumors 6502a
May 18, 2012
643
881
India
Wonder what would be the accuracy compared to medical devices? Have the heart rate sensors on apple watch gotten better for HIIT styled workouts?
 

digitalexplr

macrumors 65816
Dec 13, 2016
1,335
876
Central Missouri
I don't think many people are going to wear it for sleep due to the thickness. Using your clothes might be the right way of analyzing sleep behavior.
OK, you can stop now. You are making no sense.
[automerge]1583766795[/automerge]
Each to their own. It's one of my favourite features of my FitBit and the inability to use an Apple Watch for this prevents me moving to an Apple Watch.
Actually there are several apps available that let you use you Apple Watch for sleep monitoring. Sleep Watch and AutoSleep being two.
[automerge]1583767245[/automerge]
You know the Apple iWatch 4-5 series battery is just horrible and need more than 2 hours to fully charge. Conversely, oppo watch is capable of recharging from 0 up to 50% under 20 minutes.
My wife and I both get 30+ hours per charge on our AW4's. Her's cellular, mine GPS.
 
Last edited:
  • Like
Reactions: SRLMJ23

kd5jos

macrumors 6502
Oct 28, 2007
432
144
Denver, CO
Are you serious??? Really? ? Tons of people want this! This is one of the reasons I have used Fitbit for years and still haven’t gone to Apple Watch! If they implemented this, I’d buy it right away!!
Okay, I’ll bite.

If you wear the watch during the day (normal use) AND wear it at night for “sleep study,” when do you charge it?
 
  • Like
Reactions: ignatius345

Freida

Suspended
Oct 22, 2010
4,077
5,868
I think this is weird. Surely this needs new hardware as otherwise why wouldn't we have it already.
Also, if thats the case then why putting it in the iOS now when it could be kept for new one? This is a bit fishy
 

incoherent_1

macrumors 65816
Oct 19, 2016
1,160
2,221
Are you serious??? Really? ? Tons of people want this! This is one of the reasons I have used Fitbit for years and still haven’t gone to Apple Watch! If they implemented this, I’d buy it right away!!

There are third party apps that do this. My favorite is AutoSleep. If you’re on the fence, it’s worth taking a look.:)
[automerge]1583770414[/automerge]
Okay, I’ll bite.

If you wear the watch during the day (normal use) AND wear it at night for “sleep study,” when do you charge it?

It doesn’t take that long to charge. Going from 50% to full is only about 45-60 minutes.
 

whyamihere

macrumors 6502a
Jun 30, 2008
623
1,262
'nati
Measuring body temperature is at the top of my wish list for things to add. Too bad no rumors for that.
 

unobtainium

macrumors 68030
Mar 27, 2011
2,597
3,859
Knowing Apple, they’ll make it series 6 exclusive even if it’s technically possible on series 5
They’ll tweak the hardware on the 6 and say that while it might technically be possible on the 4/5, it wouldn’t be as good an experience and doesn’t meet their high standards.
 

nitramluap

Cancelled
Apr 26, 2015
440
994
It can be added to a Series 5 with an OS update. Apple Watches have had the hardware to measure it for years. The problem is accuracy. If Google/Fitbit are now doing it, it looks like accuracy is reliable enough now that Apple is willing to implement it.

Actually, this is false.

In order to measure SpO2 you require a red & infrared LED array - not green & infrared. Green LEDs are very good at detecting a pulsatile flow of a red substance (ie. Blood) even in tricky situations where there is lots of movement; red, not so much. This is why most fitness trackers use green LEDs for pulse rate detection during workouts.

A pulse oximeter needs a red & infrared LED due to the unique characteristics of the difference between the absorption spectra of oxygenated haemoglobin & deoxygenated haemoglobin at very specific light frequencies - which just happen to be red (660nm) & infrared (940nm).

Unless the old hardware has a dormant red LED which I’m pretty sure it doesn’t, this will require new hardware. But I would also question the need for it for the general public, unless it is coupled with sleep monitoring.

Disclosure: I’m an Anaesthesiologist (and an Apple Developer ;)).
 
Last edited:

tdar

macrumors 68020
Jun 23, 2003
2,096
2,513
Johns Creek Ga.
Okay, I’ll bite.

If you wear the watch during the day (normal use) AND wear it at night for “sleep study,” when do you charge it?
I wear my watch all day and sleep with it. When I get up in the morning I take it off and charge while I am getting ready. This process takes around an hour to some times two. My watch is charged. Repeat every day.
 
  • Like
Reactions: the johnmc

1345873

Cancelled
Dec 28, 2013
158
78
Sp02 monitoring is the one thing that I felt was missing to make the iWatch a complete product IMO.
Let's hope this feature becomes available and I hope it can measure blood/oxygen levels accurately.
I am looking forward to seeing this.

Why? It’s not the LEVEL of oxygen saturation that’s important but the AMOUNT of oxygen that’s transported. You can have 100% saturation, but still have complaints because of low hemoglobin. Also, low saturation values (even under 90%) can be normal for people with lung diseases.

what would you do if you measure low saturation but feel fine, would you start/increase medication? or let a professional have a go at it? Let me be your professional; first you have a complain (E.g. shortness of breath) then you consult a professional, if needed she/he will do further research. This doesn’t work the other way around.

if you have complaints, consult a physician, not an (Apple) watch..
 
  • Like
Reactions: Neonblue

smithrh

macrumors 68030
Feb 28, 2009
2,722
1,730
In order to measure SpO2 you require a red & infrared LED array - not green & infrared. <snip>

A pulse oximeter needs a red & infrared LED due to the unique characteristics of the difference between the absorption spectra of oxygenated haemoglobin & deoxygenated haemoglobin at very specific light frequencies - which just happen to be red (660nm) & infrared (940nm).

Unless the old hardware has a dormant red LED which I’m pretty sure it doesn’t, this will require new hardware.

Disclosure: I’m an Anaesthesiologist.

I worked on developing SpO2 a long time ago, this is a great description. Unless the current watches somehow have more LEDs tucked away, this will require another transmitter/sensor pair - so, a new watch.

The location of the sensors is also tricky. This would be reflective and not transmissive. Most SpO2 is done at the fingertip, where you can easily shine both wavelengths through the fingertip (transmissive) and also capture the pulsatile waveform.

Top of the wrist? That'll be interesting - it will have to be reflective, and that's harder to work with. But Apple has resources - money, time, no doubt some smart hires as well.

Also worked on home-based sleep apnea kits, also a long time ago. The union of SpO2, pulse rate and accelerometer readings (maybe even snore detection) - all on the wrist? That would be game-changing. Undiagnosed sleep apnea is very common - getting people aware that they have signs of it would be quite a win.

No, not a diagnosis. No, not treatment. But there are likely millions out there that would benefit from some level of detection - probably quite a few more than the already-accepted Afib detection.

FDA will of course be involved, as well as their counterparts in other countries. Do you allow actual SpO2 readings to be displayed? Or do you only allow something less than readings?

Fun times. But detecting sleep apnea would be entirely in line with Apple's direction of using technology to help people in real & direct ways.
 
Last edited by a moderator:

shinkansenwarrior

macrumors regular
Sep 29, 2015
207
228
Tokyo
Why? It’s not the LEVEL of oxygen saturation that’s important but the AMOUNT of oxygen that’s transported. You can have 100% saturation, but still have complaints because of low hemoglobin. Also, low saturation values (even under 90%) can be normal for people with lung diseases.

what would you do if you measure low saturation but feel fine, would you start/increase medication? or let a professional have a go at it? Let me be your professional; first you have a complain (E.g. shortness of breath) then you consult a professional, if needed she/he will do further research. This doesn’t work the other way around.

if you have complaints, consult a physician, not an (Apple) watch..

Of course you should see a doctor who can properly diagnose your condition rather than relying on a watch to control your destiny.

My point was the watch、if able to give accurate readings, would facilitate your decision to seek specialist guidance before something terrible happens.

3 years ago I had heart failure after I found out my lungs were clogged up with fluids, short breath and heart rate 170.
I had no Apple watch but I had common sense to see the doc.
That decision was life saving.

It would have been nice to have the watch at that time as I could have seeked guidance much earlier without putting one foot in the grave.

Thx for the professional advice
on hemoglobin, but I get checked up by a professional in Tokyo every 6 weeks and ask him to print out all the stats so I check all critical areas and take care of my health until the next check up.

So yes, I have it the right way around, the doc comes first, but the watch has the potential to be a life saving friend.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.