welcome back to wesknows tech news and reviews today i've got quite a special head-to-head
comparison and test and this is the test between the amazfit gts2e as well as the amazfit gts2 mini
so both of these smart watches are the latest additions to the smartwatch range of mass fit
i'll be doing a comprehensive test between their resting heart rate their sleep tracking
as well as their heart rate tracking while on a run so i've actually been to the forest and
i've run a couple of kilometers with both of these smart watches on my wrists now
the benchmark there will be the polar h10 ecg chest strap one of the most accurate
heart rate chest straps in the world i'll be completely frank and some of the results
did surprise me majorly and you will find out about these as we get through the head to head
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now let's do a quick recap of what these two smartwatches actually bring for us so the gts2e
has a massive 1.65 super retina amoled display while the gts2 mini has a 1.55 inch amoled display
so the resolution on the mini is actually smaller as well 301 ppi versus 341 ppi i believe now we
can see that both watches have great specs like they do look amazing they're bright they're crisp
in regards to cpu power the gts 2e is slightly more powerful now i'm not saying you're going
to see much lag on the gts2 mini but when you do run through the screens and you go through all the
apps the gts2e does run smoother and just slightly more premium but then the price does explain it as
well so if you can pick up the gts2 mini for 80 pounds or 100 bucks the amazfit gts2e will set you
back 150 bucks or 120 pounds in regards to sport profiles the gts2 mini has 70 the gts2e has 90.
both of them are waterproof uh both of them have aluminium frames and they both have dual gps in
regards to the cool and advanced features so with the gts2 mini it will be getting alexa via an ota
update that is over the air now with the gts2week it's also going to be getting alexa in the future
but currently it has voice commands and voice controls why do you need those so let's say you're
going out for a run you've got your gloves on because it's freezing outside so you just bring up
your wrist to your face and you say open workout open music and so forth so voice commands are
quite useful and it does give you the hands-free experience the way i've structured this comparison
and test is firstly we're going to go into the heart rate test of the run that i did in the
forest then we're going to talk about the resting heart rate over the night and then we're going to
get into the sleep test and analysis first up we've got the plot of the gts2 mini heart rate
versus the polar h10 chest strap heart rate and we can see that the too many traces the heart rate
almost exactly like the polar h10 yes at the start we do see that one of the peaks was overestimated
while one of the trolls was underestimated but in general we can see that the heart rates
actually follow through quite well if we look at the average heart rate so the polar h10 registered
143 beats per minute the gts2 mini is on par with exactly the same number of beats 143 so there's
zero variance fantastic now on the max heart rate the polar h10 has registered 160 beats per minute
while the 2 mini gives us 159 so the variance is just one beat per minute or 0.6 of a percent
in general that's amazing so an optical heart rate sensor is known to be less accurate than a chest
strap but here what we see is that the optical heart rate sensor on the gts2 mini is extremely
accurate and now if we take a look at the plot of the gts 2e versus the polar h10 chest strap
and straight away we see problem areas and they are quite massive so the fact of the matter is
most of the peaks as registered by the polar h10 are being flatlined and us underestimated by the
gts2e and that is actually happening across the board so across the 25 or so minutes of the run
and hence the average heart rate is actually 125 beats per minute on the gts2e versus the polar's
heart rate of 143 beats per minute the variance is 18 beats per minute on average that's a variance
of 12.6 percent that is big now if we look at the max heart rate polar h10 registered 160 beats per
minute the gts 2e registered 155 once again the peak was underestimated by 5 beats per minute
or 3.1 i think we have definitely identified a problem with the heart rate sensor on the
gts2e and considering that we're not the first ones to do it if we have a look at the comments
under the gts 2e review we can see that a number of people have registered that their heart rates
measured by the smartwatch is lower than they would have expected so i will be writing an email
to a mass fit support highlighting this issue and hopefully it will be fixed in one of the
follow-up updates the two smartwatches did give me a resting heart rate of 64 and 65 beats per minute
over the night so i think that's in line with what i was expecting so there's really not much
to talk about here but if we look at the sleep comparison if we look at the sleep screens that
i'm going to show you right now you're going to see there is an issue another issue with the gts
2e unfortunately so in front of you now there are two screens from the zep app one is from the gts2e
sleep screen and one is from the gts to mini sleep screens and we can see that the gts 2e once again
has an issue with sleep tracking basically the sleep stages are modeled all the way through the
night while on the gts2 mini we can see that the sleep stages are grouped and as expected
now in regards to as expected you see sleep is very well researched across the globe
and the fact is we know from all the previous scientific research that sleep stages are usually
grouped in cycles and as a person falls asleep usually the first sleep cycle is quite short
and on average between 70 and 100 minutes long then as you progress through the night usually
the sleep stages do sort of increase in length what we see with the gts2e is complete nonsense
because all the sleep stages are being muddled all together it's just it's showing you that the
sensor does not pick up your breathing nor your motion uh detection correctly with the gts too
many the sleep cycles all the sleep stages look more logical as soon as we fell asleep
we're entering deep sleep then later in the night we're hitting rem sleep and the cycle lengths
actually look natural and what we are expecting now the good thing that i can mention about the
gts2i is that it does register your falling asleep and wake up times correctly because i
did set my alarm to 10 30 a.m and we can see that both watches actually picked it up as 10 29 now
i fell asleep quite late at about 2 30 a.m and we can see that both watches registered that as well
so let's summarize our finding from this comprehensive test and comparison let's talk
about the heart rate first so with the heart rate we can see that the gts2 mini is very accurate and
if you look at the previous comparisons that we've done with the gts2 mini it's been showing that
proven record of very high accuracy on its heart rate monitor across the tests now with the gts2e
i'm quite shocked because it's not even that it's slightly off but having
a variance of 12.6 percent from the average that's absolutely massive usually what we
see on the optical heart rate monitors for our smart watches is that they sort of underestimate
your peaks and overestimate your throws but at the end of it you would still have a very close
average heart rate to the polar h-10 chest strap that's not what we see with the gts2e it's just
underestimating completely and utterly the peaks the trolls well they're sort of followed through
but the peaks are completely and utterly wrong and that gives us this huge break
or the huge variance from the average heart rate in regards to the resting heart rate no issues
there 64 and 65 beats per minute that's very close to what i am expecting uh from my overnight trends
now if we talk about sleep this again highlights a problem with the gts 2e
we can see that all the sleep stages well the three sleep stages your light deep and rem sleep
are actually muddled and mixed up during the night this is an issue with the gts2 mini no
problems no questions because we are seeing what we really expect to see another positive is that
if there is an issue it will get fixed via the future ota update because a mass fit are usually
very good with that thanks for watching the review if you like the content drop us a
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