Estimated Oxygen Variation

[Den_in_USA]

Why is this now available on only some Charge 3 and Versas? 

[SunsetRunner]

Dear Lisa, i agree with you on most of your points. Its a fine sports watch. It keeps track of heart rate, it measures sleep, keep track of uids and much more. However if Fitbit ADVERTISES & OFFERS an estimated oxygen level, Fitbit should honor that. Otherwise it becomes misleading. In short if it offers the benefit, they should HONOR that benifit and NOT EXPECT their customers to be satisfied with what they have. 

[pbug56]

Fitbit offered a relative O2 sensor. Spo2. An advertised feature.

[SunsetRunner]

Dear SirFit. I honestly don't think any sports watch is an exact science with the exception of entering solid data

 But the watch does keep me motivated and the spo2 monitoring system ONLY gives me an idea WHAT COULD be going on with my sleep. That i feel is extremely important.

[SunsetRunner]

Dear pbbug, and Fitbit should honor us with FUNCTIONING O2 sensor. Thank you!

[SunsetRunner]

Its all good Sir ]

[pbug56]

I expected to be able to see my O2 levels as I walked or work out. I have
asthma and seeing low O2 levels is important.

[MillieS]

Oh pbug56, sadly the graph is only calculated during sleep as far as I am aware.

[pbug56]

Correct. Only for sleep. Another bad joke.

[Kazzb75]

It does only appear on your sleep readings. I don't have premium but this just suddenly appeared on my charts. 

[SunsetRunner]

Dear Sir & to others. 

If this added feature to encourage users to subscribe to their [Fitbit] premium package, then I can see Fitbit losing customers when this feature is offered by other fitness watch companies without being required to pay for an added/extended membership.

[Kazzb75]

Hi, I have it but don't have premium membership. Sent from my Samsung Galaxy smartphone.

[SunsetRunner]

I can get about 7 hours of sleep around 2am onwards but when I wake and
sync my Fitbit app it shows how long and how much deep/rem/awake I was but
still no EOV graph and I only updated it to version 3.15 yesterday......

I’m not a premium member because I really got it for sleep tracking back in
December......DISAPPOINTING

[LisaBRN]

Agree Huntress! People should expect to get what's advertised! I received a response from Fitbit and posted that early January that the EOV is coming to all, regardless of paid membership or not. I'm just saying patience is a virtue. Granted, there may be those waiting MUCH longer (annoyance justified!). I just learned of EOV late December, so my frustration level just isn't there yet. Sent from my T-Mobile 4G LTE Device

[CBV2]

My SpO2 graph arrived this morning.  But ...

what does it all mean.  Any suggestions on where to find out?  What is a standard graph for example, what do the peaks and troughs relate to, etc?

[DC.]

CBV2 -- That's a great question. From looking at the raw data (which you can get via Data Export) and comparing it to the graphs, what Fitbit provides is a _really_ _really_ rough estimate of how volatile your SpO2 readings are. If you see on your Fitbit EOV charts a lot of high peaks then it might be really smart to investigate further (either by buying an actual pulse-oximeter or talking to a doc, or getting a sleep study). Conversely, if you don't have any huge peaks, there is no guarantee that nothing is wrong. It isn't medical data. In my experience it is only slightly correlated with medical-grade SpO2 devices. 

In fairness, the same is true of Garmin. So far, every wrist-worn device, which rely on reflective optical measurement, have problems with accuracy. That's the compromise for the simplicity and ease of wearing.

[CBV2]

DC. -- That's a great answer!  I hadn't realised I could download the raw data. It's a pity the raw data doesn't include the SpO2 readings but I guess Fibit doesn't want to be seeming to be claiming accuracy, which is fair enough given the nature of the readings.  I would also like to know the sleep score algorithm so I could calculate the sleep score from the raw data.  I have this suspicion that the SpO2 reading relates to the sleep score in some way. When I check the SpO2 graphs days with "good" sleep scores seem to be more likely to have "good" SpO2 results, but that may be subjective.  Other things that would be interesting to know are how many readings per hour the graph shows, as there seem to be lot of tiny little jiggles in the graph, and how many yellow readings in a night constitutes a worry, or perhaps the percentage of yellow readings to green readings.

All interesting stuff😁

(and apologies to all those who have yet to get the graph yet; I understand this sort of discussion would be highly irritating if you can't see what we are talking about) 

[Gcozad]

I just got my EOV graphs today!  They are populated back to 1/25. 

On 1/31 I had an at-home sleep study that showed severe obstructive sleep apnea with spo2 numbers down to 74%. That is nothing new to me as I’ve worn a cpap for nearly 20 years. The Fitbit EOV  on that night showed a great deal of orange. Where the nights before and after were almost entirely green. So I would say it works. 

On the other hand I’ve had some unusually poor nights sleep lately which were mostly green EOV so it’s not correlating perfectly to good sleep. Right now heart rate spikes look more correlative to perceived sleep quality. Perhaps because increased heart rate is what the body is having to do to keep the EOV green.

I also recently learned that the exhalation valve on my mask was completely blocked meaning I was likely rebreathing exhaled CO2 at a high rate. Again, another variable and one that I can’t measure. It didn’t show up as high EOV in fitbit. 

In summary the Fitbit EOV graph looks to be a fair indicator of potentially untreated breathing issues but is likely no panacea for dialing in that perfect night’s sleep. Well done Fitbit team!  Keep working. 

[SunsetRunner]

I’m still waiting for mine

[melcat]

Today, some Tech Newstickers are reporting that Fitbit is distributing this Feature to "more countries": Androidpolice, Tizenhelp. However, I'm in western Europe and still do not see it.

[Yrfrenjen]

I was delighted to see this feature appear on my app yesterday, but now it’s gone. Results I saw yesterday are no longer visible. I didn’t upgrade the app since yesterday. How is this possible?