This is the unique case
structure that enabled us to create our very first G-SHOCK. Its secret
is to dissipate exterior shocks by "floating" the module inside the case
with support at just a few points. We have subsequently succeeded in
adding shock resistance to the module itself through further
technological innovations.
A knobbly form ensures that the buttons never come into contact with flat surfaces if the watch is dropped.
Direct shocks to buttons connected to the module are prevented by an
all-enclosing projecting bezel that "assumes a defensive posture" to
guard them against shocks.
The crystal oscillator and other key parts inside the module are
individually protected by cushioning material. This prevents contact
failures and improper operation due to sudden distortions that could
affect parts inside the module if the watch experienced a strong shock.
Assuming the various shocks the watch may receive during use, we conduct
free-fall drop tests by hand that can be expected to create different
conditions each time.
This is to confirm that every function continues to operate normally, even after shocks that can't be predicted.
G-SHOCK achieves gravity resistance that dramatically exceeds the
maximum level of 15G required for instruments such as flight data
recorders and cockpit voice recorders by the continuous acceleration
test standards for aircraft equipment (ISO2669). Testing confirms that
all the various functions, including the 1/100-second stopwatch, operate
normally in air racing and other such gravitationally strenuous
circumstances.
Since G-SHOCK's various functions maintain stable operation at low
temperatures well below freezing, wearers can count on it in the most
severe winter weather or high-mountain environments.
G-SHOCK's reliable resistance to high-intensity vibrations makes it an
ideal watch for wearing under such rigorous conditions as high-speed
driving on rough road surfaces.
G-SHOCK's renowned shock resistance provides full protection for all its
functions, enabling them to continue normal operation even after the
watch is struck with a hammer or some other hard, heavy object.
In anticipation of the incalculable variety of shocks a watch could
receive during use, we conduct free-fall drop tests by hand that can be
expected to create different conditions each time. Our aim is to confirm
that every function continues to operate normally, even after shocks no
one could predict.
We actually submerge G-SHOCKs in water to confirm their water
resistance. Submitting them to water pressure equivalent to that at
depths of 200 meters verifies not only their water resistance
capabilities but also their resistance to extremely high pressure.
G-SHOCK's ability to resist electrical currents that can interfere with
the operation of electronic parts assures worry-free wear in
environments where static electricity is likely to occur.
from : http://www.casio-intl.com
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