Amazfit T-Rex 3 Scientific Review (Garmin Alternative, And Cheap!)

[@TheQuantifiedScientist]

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[@anixtech]

Hi. The pixel watch 1 has been updated to wear os 5 and got readiness and cardio load for free with December feature drop for pixels which makes it a compelling watch and as per what I see it's almost the same precision as my pixel watch 3 as I have both. Could you make a updated vidéo about it.

[@ActiveIdeas]

This is consistent with my findings 🔥 I was shocked to see how well the HR accuracy compared to the Garmin Fenix 8. I was also super shocked at how accurate the Helio ring was where I found even more HR accuracy when compared to devices like the Fenix 8 & Polar M3! Awesome video mate 🌟

[@TheQuantifiedScientist]

Thanks for sharing!

[@ActiveIdeas]

@ 👊🏽❤️

[@bmrbca3658]

@ActiveIdeas Why would you need/want a Helio ring if you have a sports watch (Fenix 8, Polar M3 or T-Rex 3)?

[@ActiveIdeas]

@@bmrbca3658 you wouldn’t.. unless you need something more lightweight to sleep in for example

[@jonathantimm4645]

I was a really big fan of this watch and was ready to sell my Fenix 8 and use this as my primary wearable. However, for some reason when paired with my heart rate strap for the first 10 minutes of each run the heart rate was off. Also, the readiness score was always way too nice to me. For those reasons I decided to return it, but I'm really excited in the future for what they're going to come up with.

[@TheQuantifiedScientist]

Great to hear that experience! Those are things I wouldn't have found myself, so very good to hear about it in the comments

[@amazfitsports]

Thank you for your feedback and for liking our T-Rex 3 watch. However, we’re sorry to hear that some aspects of your experience did not meet your expectations. I’d like to ask about the issue you mentioned: "For some reason, during the first 10 minutes of every run, when I pair it with a heart rate strap, the heart rate reading is inaccurate." We are paying close attention to this anomaly. Could you describe the situation in more detail so we can better work on improving it? For example: What kind of inaccuracy are you experiencing? Is the heart rate not displaying at all, or is it inconsistent with the actual readings, or is it caused by something else? Thank you again, and Merry Christmas!

[@amazfitsports]

@@TheQuantifiedScientist Thank you for your professional and sincere review, which helps more people learn about the T-Rex 3. Merry Christmas!

[@jonathantimm4645]

@@amazfitsports thank for reaching out to me. When the watch was paired to a heart rate strap the readings of the watch were too high or would get stuck between two numbers. When looking at the actual readings from the heart rate strap the watch would have this issue for about 10 minutes then it would match the heart rate strap.. I tried another heartrate strap and the issue persisted. When paired to my Fenix 8 I do not notice this issue so something.was not working on the Trex3. I really want to try this watch again to see if this issue was hardware specific or something software related.

[@MarceloBacchi]

@@amazfitsports great to see that your guys are active and improving the watch! I have a Garmin 965 and I am thinking about buying Amazfit T-Rex 3. Thank you!

[@MrMorton]

Very useful video! I'm glad to see the significant improvements with the brand. 💙

[@TheQuantifiedScientist]

Thank you!

[@xander0506]

I really would like to see amazfit balance test again, there was so many updates and improvements

[@aaakmm1785]

Could you test HR accuracy of some watches when no activity is turned on? I would be very interested how accurate are HR measurements when sensor is in low power mode doing its continuous HR monitoring.

[@danylolozan2830]

Pretty accurate, i have Fenix 7 tested against polar h10 while resting/walking, it was almost 100% accurate

[@jbkool]

Most of them are very accurate in resting measurements

[@WetterFlug]

Thanks a lot! Good enough for me 😀 Really got all I need for hiking(GPS and Mapa) and running(good HR monitoring) Definetly getting this one.

[@luccasrosa-]

Thank you so much for all the hard work you've done, Rob! Greetings from Brazil.

[@luccasrosa-]

Since the Amazfit Balance (or maybe the Active) I have noticed a great improvement in heart rate detection.

[@TheQuantifiedScientist]

Thanks for the nice comments!

[@kokolorenz]

Could you please test the Huawei Watch D2? This watch seems soo extraordinary with its blood pressure sensor...

[@ejdo1276]

Finally! I've been waiting for this review

[@TheQuantifiedScientist]

Happy to hear that!

[@bmrbca3658]

If the T-Rex 3 allowed you to load music onto it I would be all over it, but it doesn't. For someone that uses their watch for running that's a must have.

[@dadandvideogames]

Thanks!

[@TheQuantifiedScientist]

Welcome!

[@jurehrovat5425]

Was this test done before or after update 3.3.6.1 (end of november)? According to release notes, this update optimized sleep tracking algorithm.

[@TheQuantifiedScientist]

I saw, I think it is mostly before...

[@jurehrovat5425]

@TheQuantifiedScientist could you make quick test with this new firmware?

[@MarceloBacchi]

@@jurehrovat5425 it would be brilliant. We could see if the heart rate accuracy has improved too.

[@mrbyam64]

Been waiting for this, thank you. Tip: Pick up a Velcro strap if you can, the watch will be more comfortable and you'll get more accurate heart rate.

[@MrMorton]

I just pre-ordered the AmazFit Active 2 and hope it performs as well as the T-Rex 3. The value seems incredible!

[@TheQuantifiedScientist]

Let’s see! I’ll check if they’ll send me one

[@MarceloBacchi]

During the video I could see that Garmin was below the Amazfit T-Rex 3. In this case, do you suggest getting the Amazfit T-Rex 3 for running outside instead of Garmin 265? Amazfit T-Rex 3 is much cheaper and there has been some new upgrades. What's should I buy? Thank you for your amazing videos!

[@Mdogbrown]

Depends on how serious about running you are. Garmins metrics/ training features are better. If you run to just stay in shape and don’t need to know all the metrics or need all the ecosystem stuff then Amazfit is a better buy!

[@gd515051]

Been using the T-Rex 2 for a few years now and it’s worked great. It’s not as precise as watches that cost 5x as much, but I’m fine with it. This new T-Rex 3 looks great. The 2 & 3 work with HR straps which will give better HR precision. I’ve used it both ways and it’s work very well.

[@Max-fk4be]

Thank you Rob! Please keep the channel going.

[@TheQuantifiedScientist]

Thanks Max!

[@siddheshmore231]

Please test the daily step count of the Amazfit T-rex 3 against a golden standard step tracker. If you have already done so, could you please share those results?

[@CF542]

One of the best features of this watch is the battery life. I can easily get around two weeks on a charge. Hopefully, Amazfit will keep improving their watch line like they have with the T-Rex 3.

[@TheQuantifiedScientist]

I hope so too 😊

[@terenceleung7130]

Thanks for your good work😊

[@TheQuantifiedScientist]

Thanks so much!

[@wtfWhoIsIt]

Finally! Thx a lot!! You are the best!

[@elekidwatt7660]

Why are there no more stars to rate the different parts?

[@youngsuk3329]

really impressive watch, if it has a smaller version i'll buy one in a heartbeat

[@Robexotropic]

Grazie.

[@TheQuantifiedScientist]

Thanks!

[@AHMZ98]

Can you do Samsung Galaxy watch review after updates, please

[@TheQuantifiedScientist]

Yes, working on it!

[@Siddhant-l6n]

Such an extensive testing, just like we’ve come to expect! Super impressed by Amazfit tbh 🎉 Robb - a scientific test for Ultrahuman Ring Air as well pls!!

[@TheQuantifiedScientist]

Great point! I did a bunch of testing with it, but never made a video. Maybe in the future :-)

[@Siddhant-l6n]

@@TheQuantifiedScientist Awesome! In the meantime, would you recommend it for sleep tracking though? Oura isn't available in my country.

[@ld_0x1]

Maybe a video on the Garmin ecosystem that you're using? :)

[@sebastijanhokman8342]

Better for sleep tracking than apple cus it detects naps and it doesent count steps in sleep as apple watch did..also detects i was going to bathroom while apple watch doesnt know even if im binge eating in 3 am

[@filleraccount275]

Hi Rob, can you do a video on why Apple watch seems to lack deep sleep accuracy for some people namely Theresa?? I have one and for me Apple watch barely detects deep sleep as well. Thanks.. and Merry Christmas

[@rahuldharnia]

Better than past record for weightlifting.

[@PubgSteam-j3x]

Hi Rob thank you for the detail review! Just one request, could you please review again Galaxy Watch on latest OS which is on One UI 6? I heard it makes more accurate. Thank you in advance!

Curious to know how much the watch design and fit on the individual wearer influence the accuracy of the sensor measurements (IE HR). It would be really interesting to see these tests replicated with additional users to really know how accurate each device is.

[@Michael_Later]

Hi Rob, for weight lifting and some walk and swim what Garmin do you raccomend for me?

[@TheQuantifiedScientist]

I'd recommend any Garmin + chest strap. Maybe a Vivoactive or Venu

[@nizarsoffil]

i hope amazfit active edge review is coming *still didn't found any test on accessories pairing

[@pelletshoter]

I was waiting for this video thanks 🤜🤛

[@user-dart]

Thanks for the review. Great video. Are you planning a review of the Amazfit Helio Ring?

[@markii550]

My experience with t Rex 3: perfect gps, poor heart rate reading (running outside) and approximate sleep reading. Better (for me) the Balance.

[@GiuseppeSavo]

it could be interesting to test the amazfit Balance now, after 1 year and various firmwares, to see if there are improvements and if the "secret" is only software. Trex 3 and Balance should share huge part of the software.

[@manuel3830]

Very good reviews, especially for the scientific method. It would be interesting and, if possible, to make an updated reviews of the Amazfit Balance versus the Amazfit T-REX 3. Thank you in advance for your attention.

[@shoaibaalam8978]

Rob 😭😭😭 Please, when are you planning to review a Casio smartwatch? I’ve put my purchase on hold until I hear your opinion about it!

[@Bercho7]

Hi, can you test Huawei Watch D 2 ? It would be interesting to test SpO2 accuracy, ECG accuracy and Blood pressure accuracy for that watch that is said to be the most advanced for health

[@zer0trixgaming358]

Amazing. Thank you.

[@MarcoPi-pq5kg]

Amazfit, thank you ahhahah

[@RylanHayes-b5t]

Would you be able to review the Withings Scanwatch 2 pls?

[@pongsatornprapanpot4046]

Is the heart rate measurement accurate? T-rex3

[@pongsatornprapanpot4046]

Between Garmin and T-Rex3, which one measures heart rate more accurately?

[@KidtipsyEthn]

@TheQuantifiedScientist you said you use a Garmin as a daily driver. I am curious and i am sure others are which one do you have on most of the time?

[@MrHsrb]

Could you please make a full test to the Cubitt Aura Pro, please..!

[@GadgetyMV]

Very interesting test results. Great to see!

[@justaname4288]

Have you tested the polaris h9 for sleep since it's a really cheap device

[@rubencorreia7292]

Hey Rob, I have a suggestion regarding the correlation ranking plot of the devices you show. Have you experimented with flipping the two axes? If the correlation would be on the y-Axis with the respective names next to the plot values, the names would be way more readable (I think).

[@TheQuantifiedScientist]

Thanks! I'll play around with it

[@vadimchiknaverov8874]

There are any difference between 2 and 3 trex model? Trex2 price 2 times lower then trex3.

[@TheQuantifiedScientist]

I assume so, it has a different sensor afaik, but I cannot say for sure either way

[@nrmn368]

Could you revisit Galaxy Watch 7 with the new update to see if it changed anything.

[@IAMMIKEO]

This watch or their Balance watch?

[@fun2rideadventure]

yes... i can confirm that the Balance is not capable to record the awake periods in the sleep stages :( .... as you said maybe they use same algoritm ... they should be updated in the future

[@jurehrovat5425]

T-rex 3 already got updated sleep tracking algorithm around 3 weeks ago, but i think this test was done before that

[@shiryulam1774]

finally..thx for the review

[@Robexotropic]

Probably other smartwatches have improved as well, because they have updated their devices so much.

[@72spanillo]

Complimenti, bellissime queste recensioni approfondite 💪, what amazes me is seeing Huawei Watch fit 2 always at the top of the charts 😮, I had it for 2 years and I was aware of its precision, but I thought that after 3 years from its release, I would have made a leap in quality with Amazfit Balance, and instead 😔 ...., then it is surprising that the Fit 2 is superior even to the new Fit 3 and Gt5 😮 ... despite the same company and new sensors 🤔,

[@AleCardenasRealtor]

Where is the fenix 8? 😢

[@petersondossantos4838]

I was waiting a lot for that

[@richardepping9748]

Can you test Suunto watches i dont think you have tested these before 😢 or atleast not seen any reviews on your channel.

[@TheQuantifiedScientist]

I've tried to get in touch with them but it's been hard

[@MarcoPi-pq5kg]

I have trex 3 at my wrist, i was waiting to send back until have a solid review like this! Thanks again! One question zmax dreamento shows A LOT od f wake moments... is it really the best reading? It seems so strange to have more than 10 WAKE peak in a night... maybe is it not really "wake"?

[@Cavs-Trade-45]

Will you test the oura ring 4

[@patliu4968]

Your videos are great! Looking forward to see the review on the enduro 3!!!

[@johnbenedictlangaman9119]

Can you review the Amazfit Cheetah round? I would really appreciate it if you do.

[@user-dart]

I noticed that the T-Rex has been measuring my resting heart rate above 100 beats per minute for the last 10 days. What nonsense. I've been wearing a Garmin Fenix ​​7 PRO on one hand for about a month now and a T-Rex on the other. I'm testing the latter and the T-Rex3's heart rate is 40-50 and sometimes 60 beats higher than the Garmin's. I have a Polar Verity Sense belt and a clip for measuring heart rate and oxygen. All devices give the same heart rate except for the T-Rex 3, which gives 50 or more beats higher than the Garmin, Polar and the clip. Does anyone have this problem? The watch is in perfect condition and has never been dropped or hit. This is strange because the T-Rex 3 showed a very accurate resting heart rate in the first few weeks, compared to the devices above. I'll write to Amаzfit support today. It looks like a defect. I checked everything on different hands, everything is the same.

[@christoph2079]

What about the Muse S?

[@sradical8136]

This watch is a banger. I purchased one and love it.

[@CalleoPelias]

Can you review the Tozo S5 watch? Only 50usd

[@pietro4836]

Amazfit has improved a lot, but the Garmin ecosystem always remains the best ever!

[@WetterFlug]

Fanboy? ;) No seriously, its all about what you are willing to spend. The lower tier Garmin watches are more expensive than the T-rex 3 but are actually performing worse. So, GArmin is better but only when looking at the more expensive and newer models.

[@pietro4836]

@WetterFlug I'm very serious! I've been using Garmin for 10 years and I've tried many less expensive models, such as a Forerunner 245, to the more expensive epix pro models. I also have an amazfit Balance. Good display, great cardio sensor but health metrics and post-workout data of amazfit are inferior to Garmin.. Health and sleep data are always too generous and never truthful comparse to Garmin! the unbeatable Garmin ecosystem and I speak having tried them, not by hearsay!!

[@mulumppyoping1601]

PLEASE do G-SHOCK DW-H5600 review one day!!! thank you!!!

[@gbaby9134]

Can you please test Ultrahuman ring air

[@idonavon6513]

when will you do a sleep test with the apple watch 10?

[@TheQuantifiedScientist]

I finished a first test, but my reference device might be having some issues. I'll make a video about the Apple 10 Sleeps stage tracking in the next 3 weeks.

[@idonavon6513]

@TheQuantifiedScientist thank you

[@josefibrahim]

When are you going to review the Garmin Fenix 8?

[@rossianwari]

Amazfit trex 3 or coros pace pro?

[@adamluthfie7]

Since Coros also not very good at detecting sleep, i would suggest Amazfit because of the value over money If you compare to 265 garmin, or the upcoming Enduro 3. i might suggest Garmin since it has better sleep detection.

[@rossianwari]

@adamluthfie7 ok thank you bro

[@dadandvideogames]

Dang, that editor pull-away was honestly pretty slick!

[@TheQuantifiedScientist]

Yes, he's good :-)

[@michelet.5602]

When the review of the mi band 9 pro?

[@Brandencarroll1]

Is the Oura Ring 4 review coming soon? Im dying over here 😢

[@TheQuantifiedScientist]

Footage has been sent to my editor

[@CashMoneyMoore]

Weird that it's so dialed in for running but not really for anything else

[@soorajjp1847]

pls check huaewei gt5 again after latest updates

[@kop1986]

That would be good I have my gt5 but as with previous years the heart rate with no activities on reaches 151bpm and goes no higher ,why cant they fix this

[@HorizontalLifestyle]

i have one issue with Amazfit as a company and thats the software they are needing to invest on that side of things if they wish to progress.Sure might look like a good bargain but you would be better putting more money to something get a Garmin even a few years old one be better than this.

[@frpallwaysforever6034]

For HR cycling outdoor = huawei band 8

[@Jurabekjon]

Still better than samsung

[@elvintiranbalan5882]

16:54 Wow! A Thinkpad!

[@originalrelic4302]

u are an engineer . real eng!

[@wizz7177]

are you going to test the fenix 8?

[@wizz7177]

and merry christmas - thank you for your content!

[@ActiveIdeas]

From my data, Fenix 8 is a downgrade from the Fenix 7 in terms of heart rate

[@TheQuantifiedScientist]

Yes! Garmin sent me one in the end!

[@gavilanu]

I will wait for whoop 5.0

[@TheQuantifiedScientist]

Any rumors about that?

[@donescobar1936]

Good review..❤🎉

[@iamthebest22]

Attempt 3 of asking The Quantified Scientist to review the ringconn Gen 2 and/or the Ultrahumair ring.

[@TheQuantifiedScientist]

I have an Ultrahuman Air :-)

[@iamthebest22]

@@TheQuantifiedScientist Great! Can't wait till you review both! I'm more interested in the ringconn gen 2 myself, but looking forward to hopefully an oura alternative!

[@jakeva9802]

It looks great for the price but I have privacy concerns with it being own by a Chinese company

[@TomikCoin]

😂

[@the-portuguese-guy]

no worries...the king of big brothers Google is not Chinese brand.😅

[@actorjay]

💯%

[@clint5406]

And you're not concerned with Coros being from China as well? Both it and the US are greedy data eaters, the only difference is the country name.

[@MrSeedi76]

I think if you're worried about data security, you should use a mechanical stopwatch or simple G-Shock to time your runs. There even were G-Shock with step counters ages ago. So you even get a estimate of the distance. No heart rate of course.

[@Peakabike]

Good price but not money well spent IMHO, I sent it back after seeing too many issues when running, what you saw with your outdoor cycling. OHR nowhere near as reliable as what you get from a Garmin with the Elevate 4 and above.

[@amazfitsports]

Could you please explain in detail what kind of issues arise with heart rate monitoring during running? Thank you very much!

[@premiumbr]

8:40 Are you Shure Garmin 965 is in that position ? Poor results for outdoor Running ?

[@sfereig]

Please review Garmin Fenix 8

[@movielover8548]

thank you

[@ОлександрТроян-б3б]

Cool video

[@ОлександрТроян-б3б]

Nice video

[@TheQuantifiedScientist]

Thanks

[@vitalymaltsev4939]

Apple Watch 10 sleep test, please.

[@TheQuantifiedScientist]

Yes! Coming!

[@ZhangLin-g2n]

Oura ring 4 😢😢😢😂

[@TheQuantifiedScientist]

On the way!

[@hasandizili2100]

Apple watch 10 sleep Oura Ring 4 Huawei watch D2

[@user-dart]

It is interesting that in all tests T-Rex 3 was higher than my Garmin Fenix 7 PRO except for sleep, but you say that Garmin or Coros are better because of the developed ecosystem. Maybe Garmin, but definitely not Coros. Then you talk about connecting sensors. 7 PRO and T-Rex 3 and the only difference is that T-Rex does not have ANT+ and that's it. Connecting supporter sensors via Bluetooth is very simple, I would say easier than Garmin. What is your problem? I do not understand the criticism about this action

[@Zoltan1412]

The sleep tracking is rubbish, but everything else is amazing for the price