it's the Apple watch series for its
thinner has a larger display increased
heart monitoring capabilities which
gives it the ability to perform an EKG
and today we're gonna tear it down the
process of opening the series for hasn't
changed Keit the display to soften the
adhesive and use a curved blade to pop
the display out of course you could use
an eye opener to heat the display but
when you have a hot-air station and a
vise you might as well use on using a
pic we cut through the rest of the
adhesive holding the display in place
and once free we see the three cables
connecting the display to the watch even
with our fancy equipment we ended up
splitting the force touch gasket during
the opening process effectively
destroying it damaging the force touch
gasket is a common occurrence during
apple watch repairs so if you're
planning on doing a repair yourself
always have an extra one on hand this 44
millimeter series 4 has of LTP o-o LED
Retina display with a resolution of 368
by 448 the battery comes out next
and while exclude in place the adhesive
is easy to pry up however the connector
is underneath a screwed in bracket this
is a 1.1 1/3 watt hour 291 point 8
milliamp hour battery that should last
you up to 18 hours the taptic engine
comes out next and it's noticeably
thinner and longer than the one that we
found in the series 3 the speaker which
is allegedly 50% louder than the
previous version sports some hefty
ingress protection in the form of a
gasket the brains of the watch come out
in the form of the fully sealed s4
system in package while we can't get a
look at the chips inside of it now our
friends at creative electron gave us an
x-ray of the watch which gives us an
idea of what it might look like inside
the heart sensor array pushes away from
the case surprisingly easy and a closer
look reveals the headlining feature the
new heart sensors the series 4 measures
voltage between your right and left arms
with two electrodes the first electrode
is on the watch back pressing against
your wrist the second is on the crown
held by your opposite hands fingers
these electrodes detect tiny changes in
electrical polarization across your skin
as your heart beats the s4 then
interprets that data to compute and
analyze your heart rhythm we've come to
the end of our teardown which means it's
time to talk prepare ability the Apple
watch series force scored a sick
set of ten and here's why on the upside
watchband replacement to remain fast and
simple and are even backwards compatible
with previous models screen replacements
are difficult but doable it's the first
thing to come off and attaches via
simple ZIF connectors battery
replacements are pretty straightforward
once you're inside while not proprietary
incredibly tiny tripoint screws or
repair hindrance and they're all over
the place but on the downside several
component flex cables are mounted
directly to the s4 package requiring
skilled micro soldering to replace and
lastly the resonant case s4 system makes
most board-level repairs impossible