Casio MRG-BF1000B

User Manual - Page 2

For MRG-BF1000B.

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Precautions
Operating Precautions
Water Resistance
A diver’s watch is designed to withstand
pressure up to 200 meters. Do not wear this
watch at depths greater than the depth
marked on it. It can be worn while skin
diving, scuba diving, etc. Do not use a
diver’s watch for deep diving (diving with a
gas mixture) or at a depth greater than that
indicated.
Do not operate the crown while the watch is
submerged.
After submersion in seawater, use plain
water to rinse all salt and dirt from your
watch.
To maintain water resistance, be sure to
have the gaskets of your watch replaced
regularly (once every two years).
A trained technician will inspect your watch
for proper water resistance whenever you
have its battery replaced. Battery
replacement requires the use of special
tools. Always request battery replacement
from your original retailer or from an
authorized CASIO service center.
Your diver’s watch has been tested in
accordance with International Organization
for Standardization regulations.
Precautions before Diving
Check to make sure that all watch functions
are working properly.
Check to make sure the battery is charged
sufficiently.
ー 
If the battery is low or dead, charge it
before using the watch for diving.
Avoid over use of display illumination while
diving. Overuse of illumination may cause
the watch to exit the Dive Mode or may
cause hand movement to stop in order to
protect watch operation. This can also
cause all watch operation to be momentarily
disabled.
Check to make sure that the current time
setting is correct.
Check the watch glass for scratching,
cracking, fogging, and other abnormalities.
Check the case and band for damage and
other abnormalities. Also, ensure that the
band is securely tightened.
Precautions while Diving
Take care so your watch does not come into
contact with rocks and other hard items.
Band
Tightening the band too tightly can cause
you to sweat and make it difficult for air to
pass under the band, which can lead to skin
irritation. Do not fasten the band too tightly.
There should be enough room between the
band and your wrist so you can insert your
finger.
Deterioration, rust, and other conditions can
cause the band to break or come off of your
watch, which in turn can cause band pins to
fly out of position or to fall out. This creates
the risk of your watch falling from your wrist
and becoming lost, and also creates the risk
of personal injury. Always take good care of
your band and keep it clean.
Immediately stop using a band if you even
notice any of the following: loss of band
flexibility, band cracks, band discoloration,
band looseness, band connecting pin flying
or falling out, or any other abnormality. Take
your watch to your original retailer or to a
CASIO service center for inspection and
repair (for which you will be charged) or to
have the band replaced (for which you will
be charged).
Temperature
Never leave your watch on the dashboard
of a car, near a heater, or in any other
location that is subject to very high
temperatures. Do not leave your watch
where it will be exposed to very low
temperatures. Temperature extremes can
cause your watch to lose or gain time, to
stop, or otherwise malfunction.
Impact
Your watch is designed to withstand impact
incurred during normal daily use and during
light activity such as playing catch, tennis,
etc. Dropping your watch or otherwise
subjecting it to strong impact, however, can
lead to malfunction. Note that watches with
shock-resistant designs (GSHOCK,
BABYG, GMS) can be worn while
operating a chain saw or engaging in other
activities that generate strong vibration, or
while engaging in strenuous sports
activities (motocross, etc.)
Magnetism
The hands of analog and combination
(analog-digital) watches are moved by a
motor that uses magnetic force. When such
a watch is close to a device (audio
speakers, magnetic necklace, cell phone,
etc.) that emits strong magnetism, the
magnetism can cause timekeeping to slow
down, speed up, or stop, resulting in the
incorrect time being displayed.
Very strong magnetism (from medical
equipment, etc.) should be avoided
because it can cause malfunction of your
watch and damage to electronic
components.
Electrostatic Charge
Exposure to very strong electrostatic
charge can cause your watch to display the
wrong time. Very strong electrostatic
charge even can damage electronic
components.
Chemicals
Do not allow your watch to come into
contact with thinner, gasoline, solvents,
oils, or fats, or with any cleaners, adhesives,
paints, medicines, or cosmetics that contain
such ingredients. Doing so can cause
discoloration of or damage to the resin
case, resin band, leather, and other parts.
Storage
If you do not plan to use your watch for a
long time, thoroughly wipe it free of all dirt,
sweat, and moisture, and store it in a cool,
dry place.
Resin Components
Allowing your watch to remain in contact
with other items or storing it together with
other items for long periods while it is wet
can cause color on resin components to
transfer to the other items, or the color of the
other items to transfer to the resin
components of your watch. Be sure to dry
off your watch thoroughly before storing it
and make sure it is not in contact with other
items.
Leaving your watch where it is exposed to
direct sunlight (ultraviolet rays) for long
periods or failure to clean dirt from your
watch for long periods can cause it to
become discolored.
Friction caused by certain conditions
(strong external force, sustained rubbing,
impact, etc.) can cause discoloration of
painted components.
If there are printed figures on the band,
strong rubbing of the printed area can cause
discoloration.
Leaving your watch wet for long periods can
cause fluorescent color to fade. Wipe the
watch dry as soon as possible after it
becomes wet.
Semi-transparent resin parts can become
discolored due to sweat and dirt, and if
exposed to high temperatures and humidity
for long periods.
Daily use and long-term storage of your
watch can lead to deterioration, breaking, or
bending of resin components. The extent of
such damage depends on usage conditions
and storage conditions.
Watch Operation Guide 5702
2
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