Withings Scanwatch Horizon: Scientific Test!🧪 (Heart Rate, Sleep, SpO2)

I tested the new Withings Scanwatch Horizon for its heart rate accuracy, sleep tracking and SpO2. Subscribe to my weekly Newsletter(!) on www.robterhorst.com
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The EEG tracker I used is called the Hypnodyne ZMax: hypnodynecorp.com/ from @HypnoDyne Corp
⏱️This comparison is part of a larger project where I spend over 11 hours a week tracking everything in my life. If you'd like to know more:
• This mad scientist sca... ⏱️
Timestamps:
00:00 Intro
00:44 What’s new?
01:55 Results: Sleep Test
04:57 Results: Heart Rate Spinning
06:24 Results: Heart Rate Biking
07:10 Results: Heart Rate Weight Lifting
07:30 Results: Heart Rate Sleep
08:08 Results: Oxygen Saturation
09:01 Conclusions
09:23 Buy The Scanwatch Horizon?
🎵Music🎵
(1) Not Without the Rest by Twin Musicom is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
Artist: www.twinmusicom.org/
(2) Wonders by JVNA
(3) Can’t Sleep (KZbin Audio Library)
(4) Classique (KZbin Audio Library)
(5) Blurry Vision (KZbin Audio Library)
Person Waking up Video by Ba Tik from Pexels

[@liu408]

I love that when KZbinrs that are audience friendly and make timestamps for their audience. This makes it so much easier for the audience to get the information they need without spending unnecessary time going over info they don't need.

[@jasonwoolley7891]

Hi Rob, A review on the 8 Sleep Pod Pro would be a welcome addition. It tracks your sleep stages, heat rate, and respiration rate while sleeping all without having to wear equipment. Thanks for providing such a great channel for the community!

[@AlTheEngineer]

Very nice video, thank you for this scientific testing! Its refreshing to see content driven by science and actual stats :)

[@Xtr3mxD]

I just have to say it again, thx for beeing on youtube! you make my day better everytime I am watching any of your videos!

[@TheQuantifiedScientist]

Thanks so much! Which part of the video did you like best, or what type fo watch are you interested in?☺️

[@omara1561]

Wow. Thank you for putting in such good work. Subscribed!!

[@Betancourtdm]

Finally came out in the US. Been waiting for this one, its a beauty!

[@adamosanatolitis5833]

He had me at "I don't wanna waist your time, timestamps are in the description" Liked and subscribed instantly

[@ciarancummins5510]

Thanks for the review. Informative and helpful.

[@Mordotz]

Great review! I currently have the Steel HR and I was considering switching to the Scanwatch later, but would this Scanwatch Horizon be a better choice of the 2 when its available for me to purschase? Withings whole scheme have caught me on the simplistic watch-like design while having great battery life!

[@thatkaz]

Thank you so much for making these videos. I tend to do as much research as I can when buying things like this so you are helping me out a lot. I'm curious about the most recent edition. I know that they added temperature readings. Do you think you might be able to review the new one soon?

[@marcobono3619]

Hi Rob I'm Italian, you speak very fast for me, but your sympathy is contagious..TOP

[@williamstevenson2649]

Another believable review. I wouldn't get a a smartwatch without checking TQS, and all his reviews confirm my conclusion that if you're really interested in accurate HR you need an Apple Watch, a chestnut strap or Polar's Verity Sense OHR- so I got an H10 and Verity. Maybe the top Garmin and Polar watches work?

[@MaxiBela]

Thanks, great video!

[@Anthony-jx6fz]

Hey, love these videos! Is the better measurements on the horizon vs the normal scanwatch in weight lifting simply a software issue fixed by updates or is it because of different sensors that withings might have used? Would love a scanwatch as my apple watch 5 is getting really scratched since I dropped it a few times when taking it off charge (clumsy) and the battery life frankly quite crap, but am also a powerlifter as a hobby. The measurements are a nice bonus so xd. Thanks!

[@alejandroalvarezbenitez7037]

Hi Rob. Your reference for sleep is deem 2, but I checked and was discontinued, what do you recommend? It would be great to have your comments or a video on that.

[@CirclesOfMotion]

You can perform an advanced oxygen saturation test by using hyperventilation and breath-hold sequentially such as in the Wim Hof breathing technique. You can briefly lower your SpO2 down to 50% with it. The overall measurement range can matter in this test, I think.

[@denodan]

The scanwatch is a great walkers watch, pretty accurate steps and great watch for walkers. As for going to sleep and and waking up, have had no issues. Mine detects going to sleep and waking up accurately and have had mine 3 months and no issues detecting going to sleep and wakeup times. Both scanwatch and Horizon are the same watch, just different designs. If your exercise is walking then the perfect watch. Seems most fitness watches have trouble with biking.

[@gamesandgoofs]

Great video, thank you for the info! Now that the ScanWatch 2 is out, is there any chance you could test the accuracy of its features as well?

[@loganrossignol]

It would be great to see follow ups on these products after software updates to see if things improve over time with the same hardware

[@fairbanksbrian]

It's nice to see Withings finally offer a watch that one can read the time on in a quick glance. Their other watches have such slender low contrast hands that they are annoying and difficult to read. It seems like a lot of extra money to pay just to get a version that reads as easy as a $30 Timex.

[@sheriffdan316]

I wish it would show the seconds

[@gregwillden6181]

Nice videos and scientific details- very much appreciated quality. The polar h10 chest strap be used to monitor sleep quality. Could you do a video on that please?

[@pavolholic6873]

HI Man, are you planning to test new Withings Nova Scanwatch ? Is Withing planning to add NFC and glucose monitoring to smartwatches. Thanks a lot... btw: best real data video on these products.

[@PeterHerget]

Nice video and great details! I am testing the Withings ScanWatch right now and going on day 50. How were you able to get the ScanWatch Horizon model so quickly before anyone else...? Did Withings send you the watch for free?

[@georgesabikhalil186]

Great video as usual, I wish if you can start testing the ECG

[@ceekaychow]

you're extra jovial in this one, Rob! must be the new scanwatch :D

[@BS-zy3tn]

Have you ever considered doing a study on the Amazon Halo? I love your channel by the way!

[@lucagiani6694]

Hi:) I am waiting for interview number 4 with the Withings team about the operation and accuracy / reliability of the ECG. can you tell me when it will come out? congratulations oer the videos you make, always interesting.

[@realitynightmare]

Your videos are highly valued. Can you put together an ECG compilation. I would like to know which devices are performing best in this area. I don't want to check my ECG and panick for no reason. Also I feel like I don't have much choice. I'm not a fan of companies like fitbit, apple and samsung who all try to lock you into your brand. Lastly what brand has your favourite software for accessing information about the stats

[@Hardiarm]

Should include the Withings Sleep device in these studies, and see how it compares with the Sleep function on the scan watch.

[@cseysan1]

Hi Rob, many thanks for your scientific reviews, you’ve mentioned that you’ll be doing a comprehensive review of the ScanWatch Horizon in a few weeks but I can’t find it on your channel, would you please point me to where it is If it’s done? Thanks again

[@Qpalzm142]

you are the best of the best ever

[@sanketdoshi9974]

❤️ Thank You

[@MyLifeInDebt]

Best looking fitness tracker ever

[@Bilis123131]

Can you tell us your opinion about versa 2 ? It's old but does it have the accuracy of other models ? Smart alarm is a feature I'm looking for. Any suggestions?

[@Treppiede]

Does anyone know the name of the chart at 2:27? I'd like to look it up, I never quite understand the data presented on it.

[@michaeljoseph7160]

Does this watch have flight mode activation? And can it still perform checks while in flight mode ? Thanks

[@bjornk.567]

Is it possible to use this watch for monitoring SpO2 and Heart Rate during sleep an issue a (in best case: loud ) alarm if one of these values drops below under a certain threshold?

[@nikhilgaikwad8014]

Can you please also make a list/report of top five accurate watches? It should include following columns : device name |step count accuracy |heart rate accuracy |.... All sensor accuracy.... |NET ACCURACY SCORE. It will be a easy choice to decide. And later you can create your own hybrid metric to summarise the accuracy. Please redirect me to it if you have already created similar report Keep up good work!

[@enrikomulawarman7617]

Noo. No chart. We are Soo sorry

[@enrikomulawarman7617]

This guy is trying to help us but its confused us more. He's not give us a conclusion which one is what, people are crying on a chart of whose the best. He give us ton of useless review, and you have to watch every his video to know what watch are the best in heart rate monitoring which is not easy, but after viewing lots of it, I forgot and confused.

[@mussabgasmelseed5079]

He has list watch rank according to certain feature ex. Heart rate sleep he rank best for each catogry which he mentions at last few minutes for each video cause no watch is complete or excel in all side ex some watch like Apple huawie excellent in heart rate but no great software to extract useful information like garmen thank

[@mohammadalsaket4181]

Would you compare this one with the new one? Nova 2?

[@diluxe]

Does this have different hardware to the regular scan watches ?

[@TheDrabbb]

Great job again! If you can please review fossil gen 5! 💪

[@krns1617]

Do you mean maybe Gen 6?

[@TheDrabbb]

@@krns1617 gen 5 is actually in great price it will be nice to know how hr is working on it.

[@krns1617]

@@TheDrabbb Thanks, I have the Gen 6, and as far I heard from reviewers who had the Gen 5 too and compared them, they say the sensors are more accurate with the Gen 6.

[@itssmythe]

Help please what sleep app tracker are you using with the horizon. I can't find it thamks

[@Ruslan_0592]

Hey Rob, could you Please do an Update about the horizon Watch? That would be awesome 🙏🙏

[@johnmanley4528]

So so health metrics, but that is a great looking activity tracker!

[@Treppiede]

Rob, I enjoy your work. I have an Oura Gen.2, Gen.3, Fenix 6X Pro and EverSleep devices. The Oura Gen.3 and Fenix are my daily drivers. Happy to provide data, if it helps with your evaluations.

[@PeterHerget]

I have the Fenix 6X and I really, really, really wish it tracked naps. I often feel the Fenix, and other Garmins, are less accurate than Withings or Fitbit.

[@Treppiede]

I agree, it would be a nice feature. The Oura ring does track naps, it's pretty neat to see the nap appear on your daily dashboard when you wake up and refresh.

[@CarLifeUK]

A video on the new amazon halo would be great

[@karimsaid9469]

hi, can you advise fro where we can get it online .. thank you !

[@robertjleter]

Please test Huawei GT3 and huawei runner watch

[@hakki686]

i just got this one in green ! lol. Noticed today while shopping and pushing the shopping cart that steps were not measured. (maybe like 10%)

[@DawidVelCatweazel]

Hi Rob. Would be Great to see comparison of garmin's body battery vs oura and fitbit readiness score and maybe vs polar's nightly recharge :-) it would be Great to see if there is correlation with your subjective score

[@MyLifeInDebt]

Yeah this is a great idea

[@CoreyMcConnell]

Is that dust on the dial or just on the glass?

[@JPC326]

Whats the oximeter your using ?

[@jcap462]

is the health technology/sensors similar to the fitbit sense 2?

[@jemand8462]

The normal oxygen levels should actually be between 98 and 100%. In hospital, we get a little nervous whenever a patient has a saturation below 97-96 and track it accordingly as this is actually already abnormally low and might caused by obstructed breathing etc. You can see that on the "real" oxymeter.

[@Slipperystick73]

It should be 95% to 100 not 98 to 100 …. That’s what we were taught as Dr…..

[@zaibatelzm]

Will you kindly do the Ticwatch 3 pro ultra scientific test?

[@Sarin2024.]

hi Rob.please test huawei gt3 or huawei watch 3 (new sensors from huawei).thx

[@matthewjcrockett]

What about the afib and breathing while sleeping for sleep apnea and heart rate while sleeping?

[@DregGayton777]

Can you turn off bluetooth?

[@motoswatches4139]

Great video - thanks! One comment, it's the first time ever I turned the playback speed DOWN on KZbin 🙂You speak REALLY fast 🙂

[@mussabgasmelseed5079]

Me too i stop it his great information need full focus to be absorbed

[@Rachaelshaw7]

Please test the airofit pro thank you 🌟

[@beatmoser1631]

Hi Rob Love your channel and methods. I bought this watch, it is beautyful. However, on the crosstrainer it's close to useless showing 96 bpm instead of 138 bpm measured with the HFC 10. As no external heart rate monitors can be attached, this issue can't be fixed. Further, the data can't be easily be exported (only via zip - download resulting in huge json files). Verdict: useless even for moderate users like myself. I will have to go back to an (ugly) Garmin, since they have resolved both issues!

[@thachhuynh]

Can you please review the ScanWatch Nova?

[@JPC326]

This vs Garmin for sleep tracking ?

[@ryankassel5691]

I love hybrid smartwatches. Will the garmin vivomove luxe perform the same as the venu 2?

[@TheQuantifiedScientist]

Hi Ryan! Honestly, I don't know. I just ordered the Vivomove Sport, so lets see how it does 😊

[@xiongvou]

Very nice watch but I hat that the only color options are green and blue. Black is must on all watches.

[@amirnazhan]

As expected. I own the 38mm for more than a year now. As someone who casually workout, the health tracking is not good. In fact, it is worse than any cheaper smartbands like Xiaomi Mi Band 6. Buy this watch if you like the classic round shape design with good battery life.

[@merom.1248]

Look at huawei watch gt3. It has 97% accuracy compared to polar chest strap

[@hubertef]

My 38 mm had problems with Button 2 times and its realu not easy with guarranty

[@CliffR]

How is Withings so good at sleep data with their under the mattress device, but horrible with the watch? They should be able to use the same methods of calculation. Since there is little movement during sleep I wouldn't expect the sensors to be drastically different in their abilities to detect

[@wurf5336]

does it have GPS ?

[@wurf5336]

did you ever retest this ?

[@philscott7949]

I know this will be like asking about cupholders on a supercar, but does the bezel rotate?

[@msg033]

Yes it does. 120 clicks per rotation.

[@LittleFullLotaSap]

I want that watch, in blue, so bad!

[@LittleFullLotaSap]

I do wish the sleep tracking wasn't so terrible. Scanwatch gjves me over 3hrs of deep sleep and 59 nights with the Dreem 2 showed an avg of 57min. It also is not good at detecting wake ups throughout the night.

[@ssss54]

Can you please evaluate TicWatch Pro 3 Ultra

[@soumyaranjantripathy8843]

Their deep sleep is the combination of rem and deep. It is written in the app. So your tables need to be somehow adjusted. That's why many times the rem sleep periods are classified as deep sleep.

[@soumyaranjantripathy8843]

@@joeamerican2611 yes I understand. They can not separate rem and deep with their watch so they decided to combine it. Given that, the analysis could have been little fair to them.

[@romanvoronov6623]

@@soumyaranjantripathy8843 , they probably combined the rem and deep sleep AFTER this study...

[@Dallas-klay]

👍

[@jaromiszcz782]

they released v2 kind of... scanwatch nova , might be interensting

[@bigbadboogie6842]

So how about sleep apnea and ecg? Kind of the big selling point?

[@romanvoronov6623]

they don't share the SPO2 sleep data. I feel like it doesn't measure frequently enought to catch any apnea. And the ECG only tells you whether you are dead/alive, while everything inbetween is 'inconclusive'

[@elekidwatt7660]

Please test huawei gt3

[@bdash1990]

1:11 the case is not titanium. It's made from 316L stainless steel.

[@BEHNAM8011]

I sensed a bit of a confirmation bias throughout this video. The accuracy results presented are underwhelming in my opinion and do not justify the overall positive sentiment. It is a good looking watch though.

That watch looks siccc ◉_◉♥‿♥

[@heirrose1606]

Wish they made them without the word "Withings" advertisement label on the face. I hate forced labels using me as a billboard.

[@romanvoronov6623]

After half a month of ownining it: 1) They don't show you a plot of SPO2, even if you set it to measure all night long. The Sleep O2 monitoring is really one of their selling points with the long battery life due to with you give up the smart-watch features. But no, they just give you OK/Not OK type of measurement for the entire night; 2) I woke up, took an ECG and went back to sleep... Yet, despite me manually pushing and holding a button on the watch for 30secs, their algorithm still did not catch the awakening and considered it to be non-interrupted sleep... 🤦‍♂ 3) The ECG basically tells you whether you are dying or not. Anything inbetween is "inconclusive". So, overall, you mostly just have the mediocre (according to Rob's study) heart rate monitor on a classic-looking regular dumb watch for $500. I am considering returning it.

[@mussabgasmelseed5079]

😂😄😂 i read it is ok for statistic monitoring not for exercise but according to ur experience even for statistic is not accurate enough

[@romanvoronov6623]

@@mussabgasmelseed5079 , i did not return it, because it does look classy and lasts a while. but yea, i dont look much at the tracking results anymore

[@Nod4750]

The watch is recommended by Cardiologists for detection of atrial fibrillation and that’s the main reason a lot of people buy it.

[@romanvoronov6623]

I will add to this that I measured SPO2 on a trans-atlantic flight at different elevatations, and it barely showed any decrease at all: it went from 98% on the ground to something like 95-96% at the highest altitude of the flight (which is probably within its accuracy uncertainty bounds anyways).

[@Treppiede]

Finally a good looking watch from Withings. I've been intrigued by their approach to smartwatches, but never liked the overly delicate, thin shape (e.g.: Movado style) they had been offering.

[@romen5169]

But how you sleep with it .. must be terrible

[@robgeneral531]

Rob plzzz tell me what is best accurate band in budget

[@hellasgiannis]

Well , that is the whole point of his channel . Maybe watch his videos ?

[@hakki686]

depends what you are looking for to be tracked. all models do have their advantages and disadvantages. you can buy the apple (older model) - where you get good heart rate monitoring e.g. - i owned many brands started with moto 360.....during the years i noticed that i do not like charging them every single day and i also do not like to have a mobile computer on my wrist getting notifications back and forth. used several withings models now - and yes maybe they are not 100% accurate, but i do like to wear them every day and i am getting somekind of tracking on avarage level so that i can compare days/weeks/monthts activities.

[@user-gu9fo4rn6d]

Fitbit 5

[@AntonAverin]

Thanks for the video. One more proof that all of these watches are basically useless for health, no matter the price.

[@TheQuantifiedScientist]

Hi Anton! Thanks for the comment. I don't think these watches are useless, but they do tend to oversell themselves. It makes sense from a sales perspective (if the competition does it, you have to do it, I guess). However, it is good to get some perspective😊

[@AntonAverin]

@@TheQuantifiedScientist I have sudden tachicardia attacks lately and my Amazfit Band 5 doesn't even detect those. And in the resulting graph Amazfit slices heartrate by 5 minutes which is also completely useless. Was hoping other, more expensive watches, work better =)

[@DominikNajberg]

Fun fact. This watch will predict deep sleep if it simply lies on a flat surface.

[@romanvoronov6623]

thats how most sleep monitoring watches are...

[@michaelhonges]

Your video review superb, My suggestion is to slow down your talking so it can be heard better.

[@denodan]

If you want a runners watch, then it's Garmin. If you want a walkers watch and this is your exercise routine, the the scanwatch as its one of the more accurate step tracking watches. The HR Sport was rubbish, but withings have really upped their game with the scanwatch and Horizon, miles better in every way than the HR sport

[@davidepatti4835]

I am MSc. Some choices for plotting data is weird man. Even that table re the sleep test, wtf... weird brain.

[@DizzConnected]

Not titanium …..

[@andrelaszlo2817]

Montre absolument 00. Après 1 an le dos se détache.. vraiment minable.. le SAV ne répond même pas.. Ils sont incapable de réparer ni conseiller - Il faut lire les plaintes sur leur site.. Je pense qu'ils sont déja en faillite..

[@DominikNajberg]

I consider withings to offer only basic and inaccurate information. I would definitely never buy it again

[@alanlawry9386]

Do not buy, no back up from Withings