hi everyone welcome back to Wesknows tech news and reviews today we've got a massive accuracy
test for the who are we gt 2 pro so today we'll be testing its spo2 accuracy as well as sleep
accuracy as well as wrestling heart rate accuracy and active heart rate accuracy so without further
ado let's get into the testing of the huawei gt2 pro if you are new to wes knows tech news
and reviews we talk about the latest tech news we do brutally honest reviews and share hacks
and tricks along the way so we've actually done an initial impressions review of the huawei gt2
pro and i've left the linker to that at the end of this particular video so make sure to take a look
now just in summary so we've got a 1.39 inch amoled display here it's sapphire
glass on top the case is actually made out of titanium it's got a metal watch type clasp
looks amazing even on the back of it it's not just plastic this is a ceramic case so you can
do key charging as well as reverse charging from all the modern smartphones now this thing here has
inbuilt gps it's 50 meters water resistant it's got 90 sport modes it's got 13 guided workouts
for your running and general fitness there is so much to talk about here there is continuous stress
monitoring continuous spo2 monitoring continuous heart rate tracking breathing exercises and so
much more but again you can look at all of that in the review that we've done earlier on now
let's talk about the testing so have actually structured this video first we'll talk about
spo2 accuracy because we've actually compared the huawei gt2 pro's result against a medical
grade spo2 device or blood oxygen saturation monitor then we'll talk about sleep accuracy then
we'll talk about the resting heart rate so the heart rate during night or during hours of rest
and then we'll talk about active heart rate accuracy there i've actually used the polar h10
ecg chest strap as the basis or the benchmark for the accurate heart rate and of course the two pros
the gt2 pro's optical heart rate sensor will be plotted against that and we'll see what we came
up with so without further ado let's get into the spo2 accuracy test now the medical grade
spo2 monitor has actually shown us that over 5 hours and 52 minutes so that's of recorded time
we can see the average spo2 level being 91 and do consider the fact that this medical grade device
actually takes a reading every one second so over six hours there were over three and a half
thousand data points this is massive and we can see the chart there so there was one massive drop
at the early hours of the night now let's take a look at what the huawei gt2 pro came up with
now as we can see the gt2 pro actually also has shown a very low result in the early hours of the
night but the overall average over the night and early morning the range is actually 86
to 100 meaning that it does register that one bar where we had an extra low result and that is fine
so what that gives us 100 minus 86 gives us 14 14 divided by 2 is 7. 86 plus 7 is 93. so the
gt2 pro is actually showing us the average spo2 level at 93 over the night and early morning of
the 11th of july while the medical grade device is giving us 91 okay so we are off by approximately
2 but do consider this that the medical grade sp02 ring has actually been on me for just six hours
while the gt2 pro has actually calculated all the way through the night plus the early hours
of the morning and we can see that in the early morning sp02 numbers have actually gone above
94 to 95 and 96 and that has actually pulled up the average now also in regards to
spo2 readings or measurements taken by the gt2 pro so if on the spo2 ring the measurements are
taken every one second on the 2 pro you get a reading every 10 minutes so within 30 minutes
or one bar on the chart there will be only three readings another important health reading
is your resting heart rate and if we actually take a look at the spo2 ring and what has shown
us during the night we can see that for the time of 5 hours and 52 minutes during the night the
sp02 ring has actually measured the resting heart rate of 65 beats per minute and on the huawei gt2
pro you also see a resting heart rate of 65 beats per minute that is spot on so another great result
now let's take a quick look at sleep accuracy now most of the huawei smartwatches and fitness bands
actually come along with truesleep technology now this technology was actually done in conjunction
with the harvard medical school and we know that the huawei watchers actually monitor
your sleep and report three sleep stages so you like your deep and rem sleep also when you look
onto the watch face you'll be able to see the summary or the total time you've actually slept
but when you go to the app you'll be able to see much more detail you'll be able to get a breakdown
of your sleep and your sleep patterns you'll be also seeing guidance on how to actually improve
your sleep quality so now if we take a look at the chart from the huawei health app we can see
that we've slept for five hours and 30 minutes so went to sleep rather late at 3 30 a.m but
woke up at just after 9 a.m now here was a bit of a trick question that actually posed to myself so
we can see that there is a wake-up time at 8 00 am and that is true because i did set two alarms
one for eight am and one for nine am so i did wake up at eight am but i didn't actually get up
i went back to sleep for another hour and we can see that the watch picked up the wake up time it
has shown that i was awake for about five minutes and then i fell back asleep and actually got up
at nine am so i think this was definitely a pass now let's get on to the exciting test so the
active heart rate accuracy test so what i've done here is i've actually used the polar
h10 ecg chest strap so this goes around my chest and as i'm doing exercises it basically takes on
ecg readings from this band right here which goes around my chest so i was exercising for just under
half an hour i went on the treadmill and i jogged for about one and a half kilometers after that i
jumped off and carried on with weight exercises and in between sets i would do some core strength
exercises something like squats or abs so there i was trying to keep up the heart rate and actually
make a good varied exercise to show you the dynamic ranges that can be picked up by the
polar h10 as well as the gt2 pro so how we're actually going to show you this is first we're
going to be using the plot or the heart rate plot from the ecg chest strap and over it we'll be
plotting the heart rate from the gt2 pro okay so what we can see from the ecg chest strap is that
it has actually recorded the average heart rate at 125 beats per minute over the exercise while the
max was 151 beats per minute with the gt2 pro with the gt2 pro using the optical heart rate
sensor on the back of the watch here we actually see the average coming in at 123 beats per minute
and the max at 146 beats per minute so what we see is an understatement on the average as well as the
peak so on the average we see an understatement of two beats per minute which equates to one point
six percent while on the peak we actually have an underestimate from the heart rate sensor on the
gt2 pro by five beats per minute and that gives us a slightly larger difference of three point
three percent but nonetheless a difference that is under five percent is considered
negligible especially due to the fact that the ecg chest strap is always on you and it's right above
the heart so it does get the most accurate pulse readings now with the optical heart rate sensor on
the back of a smartwatch having readings which are within five percent of the ecg chest strap
is an amazing result so really what we can see is that the huawei gt2 pro has a very high accuracy
level so in regards to sp02 it's almost like for like with a medical grade spo2 monitor also
it reports on your sleep highly accurately so you know when you went to sleep you know when you woke
up and it doesn't really muffle in those results when you can wake up but you go back to sleep
also there's a detailed breakdown of your sleep pattern within the huawei health app and you can
read the recommendations to actually improve your sleep quality in regards to heart rate
well i think we've proven it in regards to medical grade accuracy so the resting
heart rate 65 beats per minute exactly the same as measured by the medical grade device
if we talk about the active heart rate so we can see that the ecg chest strap and the actual watch
or the heart rate sensor the optical heart rate sense on the back of the watch are within 1.6
for the average and 3.3 percent of the max all of these results do point to the fact that the
gt2 pro is a trusted device anyway thank you for watching this accuracy test of the huawei gt2 pro
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