Oura Ring 3 : Scientific Sleep & Heart Rate Review 2023

[@demimascot]

It is so nice to have here a person who invests so much time and efforts in proper reviews! I've bought a device wich I hadn't even been considering due to your reviews and it appeared to fit my goals perfectly. So thank you

[@TheQuantifiedScientist]

Thanks so much! These kind of compliment are always so nice to see!

[@triparadox.c]

I have personally purchased Polar H10 chest strap thanks to him as well. I use it while exercising on my Samsung Health. Unfortunately, Samsung Health as an app is underdeveloped for its accuracy. For example, swimming is based solely on the time spent swimming with zero regard to pool length, lap completed, or even heart rate (to measure intensity). But that's an app problem, not the device. I'd say I wish Quantified Scientist would also start reviewing major health apps to see if they properly use metrics they already have.

[@Anurag-st7wl]

Really. I can't trust anyone more than Rob when it comes to wearables.

[@mikafoxx2717]

@@triparadox.c He's got me considering a polar strap to go with my Garmin, especially since I'm somewhat asthmatic so weights and HIIT are better than sustained cardio for me on the regular, and the accuracy difference between them is amazing for things like that.

[@mdhs6575]

@@TheQuantifiedScientist sir we need a mi band 7pro scientific review, please 😭

[@FrancescaDePaolis]

Hands down, the most accurate and in-depth review I have seen so far. Thank you for putting such amount of work to review the performance of the Oura ring. It is highly appreciated.

[@leoott436]

Thank you so very much, it is highly appreciated that you take your time to bring this unbiased scientific review to all of us!!!

[@TheQuantifiedScientist]

Thanks so much Leo!

[@MyrtleBeachWebAngel]

Oh wow! I am so excited to hear this update. Thank you.

[@TheQuantifiedScientist]

You are so welcome Mit! 😊

[@vaibhavdeshmukh7402]

You're absolutely the only guy I refer to for buying fitness products. Thanks!

[@ChiknaAhmad-gy9oo]

Brother, thank you for your hardworking and the high quality review. Keep it up.😤

[@itskareemelsayed]

Yessss finally I've been waiting for this video forever. Watching now!

[@TheQuantifiedScientist]

And, what did you think?

[@itskareemelsayed]

@@TheQuantifiedScientist great video of course Rob! Still disappointed 😫 but it is somewhat in line with my experiences. I had such high hopes for gen 3! Now I'm thinking about an apple watch SE. Kinda sucks because I upgraded from Oura gen 2 and believed the hype. I just want the lowest profile all purpose tracker. Now it seems Apple watch is the way to go. Especially with all of the latest ones scoring so well in your testing.

[@joesparks6822]

I’m looking forward to your review of the Oura ring Gen 4.

[@2025jan6]

Thank you so much been so excited for this to come!!!! Thank you for all your hard work looking forward to the next update.

[@12stepsbeyondtheeventhorizon]

This should be the gold standard for tech reviews. Absolutely tremendous job. Easiest sub I've given in a while.

[@cyriacbere6217]

Thank you for taking the time to review these things

[@MrCdn613]

Been waiting for this one! Woohoo!

[@TheQuantifiedScientist]

Hope you enjoyed it Eric 😊!

[@MrCdn613]

If only one could combine the Apple Watch functionality with the Oura app, we’d have the best of both worlds!

[@TheQuantifiedScientist]

For sure Eric!

[@MrCdn613]

@@TheQuantifiedScientist I’ve been debating between those 2 for a while but I think this has convinced me to go with the Apple Watch. They continue to improve at a much faster rate so I think hoping for a better UI from Apple is a surer bet.

[@triparadox.c]

@@MrCdn613 Better UI is almost a guarantee with Apple. They take care of UI very well. It's one of the few things I envy from Apple users being an Android user myself. On top of that, Apple Watch algorithm is crazy good and accurate.

[@MrCdn613]

@@triparadox.c 100% agree!

[@onetwofourfive]

So you pay 314-576 eur depending on colour and material for a ring and then you have to pay monthly subscription 5-6eur for more data that is collected. Is this a freaking joke? No thanks

[@travismattern5955]

Ohh a day too late! I just bought my oura ring yesterday. Looking forward to this video.

[@travismattern5955]

Actually, I do have a question. If I'm doing an activity where I can't wear the ring, but can wear a H10 strap, is it possible to sync that data from the strap to the ring?

[@francisb1]

i like the concept of aura ring, something so minimal that you could forget you have it on, doesn't even have a screen. But apparently the technology isn't there yet to make it a ring, performance aside, it's too bulky to be a ring. They should make a bracelet, that I would be interested in. And then I could wear a traditional watch, which looks a lot better than smartwatches.

[@TheQuantifiedScientist]

Hi Francesco! Thanks for the input, I can indeed imagine that some people prefer that :-)

[@purrsnpurls9527]

This is awesome, thank you so much! I know you focus more on exercise, but would you ever consider making a video about suitable trackers for people suffering from PEM, e.g. due to Post-Covid or ME/CFS? The number of affected people is growing and while tracking your heart rate is recommended it is difficult to find accurate information. You're the one I'd trust the most to make a well-researched video about that :)

[@MartijnVermeulen]

I second this! Would be so great to be able to watch a video that focuses solely on recovery phases; HR and HRV during rest and just during the day in general with general health tracking (not sports related)

[@MrTherickz]

i wear fitbit sense 2 and oura 3 - the new oura sleep algorithm does seem very similar to my fitbit most nights

[@idolevy5732]

Thank you for this video. Can you please review the new Huawei Watch GT 3 SE with the new sleep algorithm

[@VegasPerformer]

Great video love all the in-depth information I appreciate your effort gathering all the data.

[@endeuinable]

That was a very useful first review! Thanks for making these data driven comparisons.

[@kukensson]

You do an exemplary work. Truly. Real, hard science

[@Masteroogway887]

hello! how about a comparison of accuracy against the Ultrahuman ring

[@zorqis]

I use the Oura 3 for sleep tracking and readiness score. I use chest strap and a Garmin watch for HR. The Oura is unusable for exercise HR. But it's quite good for HRV tracking during the day and night. For sleep tracking, the new algorithm has been a lot better subjectively, and it also seems to get better over time. I continue to hate the subscription model. But when my first ring 3 died, I got a replacement in record time, no questions asked.

[@fabianvogt394]

Are you collecting the Data merged in one App or do you have to switch between the Main Apps of each device?

[@zorqis]

I have been using separate apps, and only compared the metrics (in time). Not by downloading and analyzing the raw data. It's not a scientific method, just a consumer level comparison. :)

[@fabianvogt394]

Thanks. An app that brings all data together would be perfect for such cases so that you can have the best of both worlds and all results ​​have an influence on the training readiness

[@choc3732]

" and it also seems to get better over time" What do you mean by the Oura Ring sleep data gets better over time?

[@zorqis]

@@choc3732 I didn't write anything like that. I said the algorithm seems to get better over time.

[@Mehwhatevr]

Good to see an update. Some of these devices I wonder if they’ve been improved

[@erwinrogers9470]

Thank you, for sharing

[@FleccaRobinson]

Youre like freelance consumer reports. Bless you bro

[@AtypicalPaul]

Thank you for your hard work

[@Juanjo191]

Thank you so much for the effort you put in your videos. Really appreciate it hug

[@quantifiedmax]

Hi Rob, thanks for a new video. I'm currently also looking at oura 3 new sleep staging algo an for me it seems to do a little better than before, consistent with your results. I have few questions about your QS project related to exercising and i hope you will answer them in some way. Since you are doing a lot of cycling/running exercise, i wonder what did you extract and track from this data. I see a big field there for track internal/external variables and see how body respond to training and make data-driven daily decisions (like do training today or not, and if do - what intensity etc). For now i'm recording HR / HRV for each exercise and some exercise specific data: stryd power and speed for running, garmin rally cadence/speed/power data for cycling, sets*reps*weight for strength training. From these data some indexes may be calculated, like mechanical job in kJ as a measure of external load and some HR derived indexes like TRIMP to measure internal load. Also some rates (like power to hr) can be used to assess current cardiorespiratory fitness and monitor it over time. HRV derived from standardized cycle ramp (like +20W every 3 mins) may be used to estimate VT1 / VT2 and monitor them over time. 3-5 time-to-exaustion trials (TTE) may be used to build Critical Power (CP) model to decribe which power can be sustained for log period of time and how much of anaerobic capacity one have over that power. There are also other models and tools (like SmO2, LT fingerpricking, monitoring cardiac drift at VT1 etc) for monitoring / modelling physical state based on training data. Also i'm intrested in what main devices you using to track these metrics. They might include watches, power meters, chest straps etc. It would be cool if you make a specific video about which devices are best to monitor and track exercise in QS style :) I think, right now a lot of people interested on how to exercise and data-driven decisions from accurate device/app framework might provide useful utility for daily decisions. Thanks again for you work :)

[@TheQuantifiedScientist]

Hi Max! Thanks for your detailed question and for all the information you provide :-). Honestly, I think you probably have more information on this specific subject than I do. For my indoor cycling workouts I usually do the same program, cycling at a little over 270 Watt or ~30 mins. One rough estimate I've found to be indicative of my cycling performance is how many short breaks I feel I need to take during the workout, but this is of course very specific to my situation. However, what you are asking for is something more general, quantitative and systematic, and I must admit I do not have an answer for you there. I mostly monitor my trends over time of RHR and HRV during the night to assess wether my fitness is increasing (though this is also far from perfect). I wish I had a better answer, but I am not familiar enough with the literature to make any more statements. Have a great day!

[@razaliibrahim9985]

Hi Rob. Appreciate sooo much if you could do a review for the Huawei Watch D that has the blood pressure measurement and ecg.

[@chriskozlowski8125]

Have you tested the accuracy of HRV? Curious how accurate it would be at rest. Your data has me concluding it wouldn't be reliable while exercising.

[@forzaviola9512]

Tremendous work. I was waiting for this review, and have now bought an Apple Watch SE instead because of it. Hopefully Oura can continue to improve enough to get back in the game. Thanks for the review, and hope you’ve recovered fully from Covid!

[@TheQuantifiedScientist]

Thanks so much, happy to hear you liked it! And, yes, I have completely recovered :-)

[@dallas77us]

Rob, another well done, comprehensive test. Thanks! The Dreem 2, no longer sold to the public, in-depth test is over two and a half years old. Has its firmware been updated? At that time it was 83.9% accurate while the matrix varied by 9.73% to 47.1% vs that pro EEG. At best acceptable, those values have been overall benchmarked against sleep algorithms across the cost spectrum, including this yet another Oura test, for a BETA. Given that there is more to sleep than light, deep and REM, it's apparent that even the Apple and FitBit devices are SLEEP curiosities. Fitness bands/watches have great value as do your tests of heart rates, SpO2, etc. IMHO, we can do without another Oura test until a final v4 is released. Your talent is needed on other devices! BTW, you should HOST A FORUM. Some can be monetized. It's tedious to ferret out here the attempts at discussions scattered in the fog of all the deserved kudos.

[@danpresida]

Another excellent video, Rob! Is there a prediction for the release date of the video about the amazfit band 7 and the complete review of the mi band 7 with the updated firmware? I'm really in doubt about this two, but waiting for your review to make a decision. Thank you again, your videos help us a lot, man!

[@mboiko]

So in the first heart test, it gets an R=0.66...while a Mi Band 7 gets an R=0.92....think I'll stick to the $45 Mi Band 7

[@TheQuantifiedScientist]

Haha, indeed for 45 USD it could be a good choice for many people :-)

[@mboiko]

@@TheQuantifiedScientist Rob I agree 100%...

[@anirudhpoddar4413]

#thequanitifiedscientist, would you be able to provide an in-depth review of the Ultrahuman air ring as well?

[@NicksStuff]

Is there *anything* the Oura does better than a $50 smart band?

[@mesteme]

I don't understand why there aren't more screenless trackers - I wish the Jawbone Up bracelet was still around or the FitBit Flex 2 (the current one looks disgusting) - I wear mechanical watches and don't want to wear them next to a digital screen, but the Up bracelet was a good compromise. I'm not going to wear a ring but I would welcome a bracelet variant of the Oura Ring, it could be a module within interchangeable bracelets.

[@pravolivo]

thank you for such a thorough review! I haven’t noticed any Withings watches in your comparison. Would be curious to learn more about them, quite a few of my friends seem to like them

[@ElverGalargaDíaz]

Please review the ultrahuman ring

[@weekendwarrior8179]

Any updates on the galaxy watch 5 pro? There's been quite a few updates on it.

[@Kuk0san]

Hey Rob, thanks for you insightful reviews! I was wondering if you had links available to your ranking graphs for every device per functionality? For sleep, heart rate tracking, etc?

[@PaulCohen-e2n]

Thanks, your analysis convinced me that I don't want an Oura ring. I'll wait until I can find something with better accuracy.

[@WPT_NL]

Bedankt voor alle geweldige video's die je maakt, ik heb er al veel aan gehad! Wat ik nog graag zou zien in een video van jou is een video waarin je uitlegt en/of tips geeft wat de meerwaarde kan zijn van mensen die activty trackers gebruiken om slaap en beweging te meten. Wat is de meerwaarde in het leven en hoe kunnen ze deze informatie gebruiken?

[@erwinrogers9470]

Great review

[@barney9997]

Hey Rob. Thanks for yet another very comprehensive, detailed video! Do you know of any EEG headband device similar to the Dreem 2, which is no longer sold to the public? I'm interested in tracking my sleep stages. I have an Apple Watch/iPhone, but I've not been able to get it to track sleep stages, which is apparently not that uncommon of a problem. I've tried various solutions to this problem to no avail. Very frustrating. Anyway, I'm at the point where I'd like to try something similar to the Dreem 2, if such a device is available for consumers. Thanks Rob!

Could you please make a test if sleep tracking is more accurate with a H10 chest strap than in a regular wrist-based heart rate measurement? Although I'm not even sure if smartwatches let you record your sleep with a chest strap, but it would be interesting to see the difference

[@vatsa7163]

Yes. I am also interested.

[@abdiyazkibustami3205]

please test the latest sleep algorithm from huawei (HUAWEI TruSleep™ 3.0)

[@seemsfair4599]

Could you review the amazfit band 7, I've seen so many people asking in the comments for it

[@TheQuantifiedScientist]

Hi There! For sure! I already did an analysis, but haven't had time for the video yet. Hopefully soon! Thanks for commenting 😊

[@seemsfair4599]

@@TheQuantifiedScientist Thank you very much :)

[@kenkanadi2900]

when ultrahuman ring air?

[@L.I.T.H.I.U.M]

Hey Rob, can you explain why companies find it so hard to make their products accurate? Since there's a lot of data to fix them

[@user-sl8kq3cj7b]

Great video as always! I just wish Oura would make the ring more comfortable. I had to return mine as I couldn’t sleep with it on, ironically..!

[@farkas266]

Awesome video!

[@TheQuantifiedScientist]

Thanks so much Farkas!😊

[@lecampusdutrading]

THANK YOU VERY MUCH please do a review about pulsetto , vagus nerve stimulation device , claim enhance HRV.

[@someones5551]

Would you ever consider doing a video like this for the ultrahuman air ring?

[@omshallom5521]

Thanks for this video, I've noticed the time it takes for me to fall asleep seems much more accurate with the new beta , and I wore the gen 2 on my right hand ring finger and the gen 3 on my left hand index finger, and every night for 7 days, the gen 2 showed a higher value for sleeping HRV.

[@kasparsburka7235]

Thanks for the awesome in depth review. ❤ Would be great to have your take on what the relatively inacurate HR measurements mean for accuracy of rediness score for somebody doing a lot of sports

[@NicksStuff]

Do you have a blog or something where you publish these graphs?

[@minneapaulis]

Thank you so much! I think the thing that really draws me to this is the fact that it’s a ring. I find watches so uncomfortable at night (tried Fitbit, tried Apple Watch) so excited to try something minimal

[@pauljones9150]

The quality is off the charts :)

[@earth_angel1529]

Have you done a review of the Ultrahuman Air Ring? I'd love to see how accurate it is

[@mismagiuz]

Was thinking about getting one recently but was waiting for a sleep review! Great timing :D

[@TheQuantifiedScientist]

Glad I could help!

[@kaveman_4242]

After getting into mechanical watches recently I’m looking for a ring or strap to wear. Unfortunately nothing is thin enough for me :(

[@matteova3973]

Can you review cheaper tracker as amazfit gtr 4 or huawei se?

[@hilmyakatsuki1665]

Requesting to test out Happy ring when it is released. They claim they can track mood like Fitbit. Please test and tell us if it's anyway better than Fitbit. Thank you.

[@gianmarcoguarnier2525]

As a biomed student I love your videos, is there a guide you made about how to set up a stream between any device and a pc? I have garmin in particular and they use .fit data (and their API isn’t accessible to everyone) any help would be much apprecieated.

[@rashie]

Great review! I'd love to hear your thoughts on the YHE BP Doctor Pro.

[@greggparker763]

Love your channel and subscribed. I have a quick questiion i hope u can answer. I am running a functional medicine clinic and used a firstbeat device and polar h10 which is great but my patient find the devices awkward to wear for 24 or 48 hr assessments for stress, sleep and recovery. The whoop device is a bit expensive and doesnt allow multiple users. I am thinking a watch is a good introduction for them. I am looking for a contineous hrv watch with a comprehensive wellness report. Which one wouldnu recommend. I am thinking a fitbit but i would appreciate your advice. A fitbit allows multiple accounts i believe. Thank you so much in advance.

[@ed5616]

Are you going to review the body scan from withings ?

[@loganedwards2566]

Have u heard of the ringconn it's a competitor to the oura ring just released on indigogo

[@giuseppemolisse1826]

Hi doctor, is it okay to wear it on any finger or have you noticed better results on any particular finger? Thank you🙏

[@AM2PMReviews]

Now I need to re review mine but overall I couldn’t even were mine for most workouts since I lift things and I found my Apple Watch worked better for most things and it was already being used for other things

[@ZikraGogi]

Please make review Xiaomi band 7 pro please ❤❤❤❤❤

[@giuliaseoane168]

please do a gts 4 mini review 🙏🙏

[@tawheedmohammadsayyid390]

Hey, can you tell me when it comes to the heart rate test, at the initial x, x graph I wanted to know when line is for Oura and for Polar

[@dennis6088]

Do you plan on reviwing the ultrahuman or ringconn ring?

[@jacob042]

Oh my god. Let me just begin by saying I subscribed and liked before the video was even two seconds in after I saw the preview of all the graphs you had. Seriously. The set of KZbinrs who do data analysis to this extent let alone at all, especially the subset of those who are product reviewers, I thought was actually n = 0. But now I know n >= 1. Next, I know this is an old video, but I had some questions and a possible request if you happen to read this! I was wondering if you could either provide your raw data somewhere (if you are too busy), or run a quick analysis for me. Let me preface with a rationale: I feel like a lot of these devices advertising the optimal wake up aka “smart alarm” feature by waking you up when you are in light sleep, and as such, I feel like minimal time difference error for change in sleep stage between EEG vs. device is almost more important than raw percentages, since the basis of being woken up is ensuring you’re actually not in deep sleep anymore, and necessarily not the overall percentage accuracy. (Though it’s undoubtedly important too, and you can infer a lot from it.) From my estimation here it looks like around a quarter of one grid length or about 30/4 = 7.5 mins, which isn’t that bad, but it’s hard to evaluate from this scale. But if that’s the difference between deep sleep and light sleep, and it’s 8 plus minus however many minutes too early, I wonder by how much that would cause a less efficient awakening since you’d still be in deep sleep. The other variable I was interested in was minimum number of “hallucinations” (defined as an incorrect change in reported sleep stage), since this would protect against what I fear as well, as opposed to just raw %. It’s interesting that your EEG data showed only one deep sleep instance on the second sample, so I’m now even questioning EEG’s accuracy here. Also I’m assuming “light sleep” is lumped stage 1 and 2, correct? I wonder if it’s just not set to detect stage 3 properly (either poor physical electrode attachment or software settings maybe(?)). I feel like ascertaining these two variables would would be pretty easy from your data programmatically, and if it’s not too much to ask, I’d especially like to see a similar correlational graph like the one you showed for all the different devices but with these two variables if you’re game for either sharing the data or running it. I feel like we can further get some valuable insights from this. Please let me know either way, and thank you again!

[@didntaskg770]

Thanks for your efforts but I have a question regarding sleep test . in your old videos I noticed 'awake' used to happen a lot but now it's improving... have you made any lifestyle changes or it's just normal!! There are two explanations of awake - 1. When we change sides 2. When we get up in the middle of night for whatever reason. So how do you explain awake in your videos!! Would be thankful ....

[@jesuslovesu4714]

Thank you for this review! I was considering getting the oura ring for a while now. My main question for all of these devices is how accurately they calculate calorie burn data. I can’t seem to find a good answer.

[@Hdu3u3he83be]

Can you please do the ultra human as it’s the best competition to the oura ring but doesn’t need a subscription

[@durranisfamily6098]

Any suggestion for the gym weightlifting.. for the rep count, muscle target, calories count daily, calories burn..

[@zakialbetiyan449]

Amazfit gtr4! Rob promised to do a video about it, I hope he'll release the video soon

[@evansalmonsen]

Do you plan on testing the Amazon Halo Rise? Contactless sleep tracker? I am extremely tempted to pick one up as it is on sale but there aren’t any real science based reviews out yet from anyone who knows how to properly analyze data.

[@remcoborgman9593]

Can you test de whoop straps bicep band vs the normal whoop strap. In my experience the bicep band seems to make the whoop more accurate. Thanks for the video's

[@DiggingtheJive]

Have you heard of Bodimetrics Circul sleepy and fitness ring? Wondering how it performs in comparison to Oura. It’s more affordable.

[@fabobg]

Hi, great work! Thanks! Is it possible to do a new test of the Garmin Venu 2 Plus as the result is really low and the device went through multiple firmware updates (at least one pointing to addressing sleep metrics accuracy) ?

[@a314]

Please review Circular ring

[@dianacaballero6494]

Between the Huawei Watch Fit 2 and the Amazfit GTS 4, which one do you recommend for heart rate tracking?

[@DigiDriftZone]

Are there any apple watch apps you recommend that use the sleep stage data but display the info in a more useful format like Oura does? - My Apple Watch may be more accurate, but the data presentation is next to useless to get any actionable daily information.

[@TheQuantifiedScientist]

Hi! I haven't tested it, but I heard that many people use Athlytic, but I have no experience with it

[@quantifiedmax]

I would say even if you have and EEG device with all data presented in simple format, its not an easy task to derive any actionable daily decisions based on these data. Most of healthy sleep interventions works without any sleep stages feedback (go to bed at same time each day, sleep in quiet and cold environment, have a sunlight early morning, and avoid caffeine intake after midday, avoid eating and exercise 2-3 hours prior bed). Another issue is a feedback loop, if someone have a low deep sleep at night he may consider to avoid exercising this day, because of maybe not recovered enough. But low deep sleep may because of low activity on a previous day and better decision is to exercise at this day, to stimulate body to produce more deep sleep. So it's not that simple as it seems :)

[@DigiDriftZone]

@@quantifiedmax Low deep sleep is not an indication to take it easy the next day but a low HRV might be in combination with not enough or restless sleep. If your REM sleep is consistently dropping over time, this could be an indication of some underlaying health problem, etc. The Oura app does a great job to give some actionable advice.

[@DigiDriftZone]

@@TheQuantifiedScientist I had it installed but never actually looked through the app, looks good at first glance thank you!

[@quantifiedmax]

@@DigiDriftZone HRV is useful, but oura averaged nightly values seems to be not too sensitive for daily stressors. In my case i see significant nightly HRV changes pretty rare, mostly when i get sick. Even hard training most of time doesnt affect my HRV. Another case is a morning standing HRV which is pretty sensitive to daily changes. REM dropping overtime doesnt meanigful without context. Dropping every year for a bit? Thats aging. Have low base values? That's another issue. Dropping for 2 days and then comeback to normal values (1.5h+) - nothing to do here, its fine? Anyway oura cant detect REM sleep with enough accuracy and can't give actionable advices on something it cant measure. Ring trying to predict REM sleep based on HR/HRV/accelerometer data and some modelling (circadian rhythm etc), its not really measuring REM, because REM described as combination of EEG and EMG signals, something that ring doesnt measure. So i dont see how oura can give advices here, even nightly HRV advices doesnt seems to be useful without context.

[@steras6978]

Will you ever review the GTS/R 4? They got the biotracker 4.0 I wanna see of they are just as bad as the previous ones or slightly better

[@NachoDLF]

Tbh for the price and subscription model of the Oura Ring, there is no way I would buy it. Specially because I have an Apple watch, that's better in all aspects.

[@TheQuantifiedScientist]

Hi! Yes, makes sense :-). Oura is much better at data presentation than Apple still, so that is one benefit

[@gd515051]

Ouch that thing tanked. Love the idea of a ring to track health.

[@AtypicalPaul]

Ever slept in polar h10? Is it uncomfortable?

[@chibonchibon3967]

you are the best benchmark for wearable gadget, thanks for great vids as always

[@San37815]

When will you test sleep as android app?

[@Altafkhan143]

Hi….Request you to please test Ultrahuman Ring

[@hobobbobho]

I've had multiple Oura Rings fail from battery issues. Both for second and third gen. Only the first gen ring has shown any level of quality and lifespan. I just had a replacement under warranty but am now outside of warranty and waiting for this one to die too. I really would strongly suggest avoiding Oura. Very cool device and I have enjoyed every generation of it that has been released but if this most recent replacement dies on me I am done with them. The quality control issues are just too much and they are getting more dodgy about replacements under warranty.

[@DMFPERFORMANCE]

I'm looking forward to the new Circular smart ring and the Ring conn device. Both have live on the fly HR telemetry for instance viewing on a smartphone (The oura is retrospective a huge negative). These are Zero subscription alternatives to the rip off Oura ring.

[@Lecielouvra]

Hi hope you test huawei gt 3 se

[@andreduarte7206]

Thank you for bringing out the tests with the new firmware update from oura. Apparently the Apple Watch remains one of the best choices and a real versatile device. Are you aware of any good app for sleep tracking that takes advantage of the fantastic Apples sleep tracking algorithm?