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Even if a watch is water resistant, note the usage precautions described below. Such types of use
reduce water resistance performance and can cause fogging of the glass.
− Do not operate the crown or buttons while your watch is submersed in water or wet.
− Avoid wearing your watch while in the bath.
− Do not wear your watch while in a heated swimming pool, sauna, or any other high temperature/high
humidity environment.
− Do not wear your watch while washing your hands or face, while doing housework, or while performing
any other task that involves soaps or detergents.
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After submersion in seawater, use plain water to rinse all salt and dirt from your watch.
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To maintain water resistance, have the gaskets of your watch replaced periodically (about once every
two or three years).
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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.
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Some water-resistant watches come with fashionable leather bands. Avoid swimming, washing, or any
other activity that causes direct exposure of a leather band to water.
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The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in
temperature. No problem is indicated if the fogging clears up relatively quickly. Sudden and extreme
temperature changes (such as coming into an air conditioned room in the summer and standing close to
an air conditioner outlet, or leaving a heated room in the winter and allowing your watch to come into
contact with snow) can cause it to take longer for glass fogging to clear up. If glass fogging does not
clear up or if you notice moisture inside of the glass, immediately stop using your watch and take it to
your original retailer or to an authorized CASIO service center.
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Your water-resistant watch has been tested in accordance with International Organization for
Standardization regulations.
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Magnetism
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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.
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Timekeeping accuracy may be affected if the watch itself becomes magnetized. Also, 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
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Exposure to very strong electrostatic charge can cause your watch to display the wrong time. Very
strong electrostatic charge even can damage electronic components.
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Electrostatic charge can cause the display to go blank momentarily or cause a rainbow effect on the
display.
Chemicals
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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
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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.
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Metal Components
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Failure to clean dirt from metal components can lead to formation of rust, even if components are
stainless steel or plated. If metal components exposed to sweat or water, wipe thoroughly with a soft,
absorbent cloth and then place the watch in a well-ventilated location to dry.
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Use a soft toothbrush or similar tool to scrub the metal with a weak solution of water and a mild neutral
detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe
dry with a soft absorbent cloth. When washing metal components, wrap the watch case with kitchen
plastic wrap so it does not come into contact with the detergent or soap.
Bacteria and Odor Resistant Band
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The bacteria and odor resistant band protects against odor generated by the formation of bacteria from
sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance,
keep the band clean. Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and
moisture. A bacteria and odor resistant band suppresses the formation of organisms and bacteria. It
does not protect against rash due to allergic reaction, etc.
Liquid Crystal Display
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Display figures may be difficult to read when viewed from an angle.
Watch with Data Memory
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Allowing the battery to go dead, replacing the battery, or having your watch repaired can cause all data
in watch memory to be lost. Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any
damages or losses caused by data lost due to malfunction or repair of your watch, replacement of the
battery, etc. Be sure to keep separate written copies of all important data.
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User Maintenance
Caring for Your Watch
Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your
watch performs at the level for which it is designed, keep it clean by frequently wiping with a soft cloth
to keep your watch and band free of dirt, sweat, water and other foreign matter.
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Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh water.
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For a metal band or a resin band with metal parts, use a soft toothbrush or similar tool to scrub the band
with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to
remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing the band,
wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or
soap.
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For a resin band, wash with water and then wipe dry with a soft cloth. Note that sometimes a smudge
like pattern may appear on the surface of a resin band. This will not have any effect on your skin or
clothing. Wipe with a cloth to remove the smudge pattern.
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Clean water and sweat from a leather band by wiping with a soft cloth.
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Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation.
Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation.
Dangers of Poor Watch Care
Rust
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Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not
cleaned after it becomes dirty.
− Dirt on your watch can make it impossible for oxygen to come into contact with the metal, which can
lead to breakdown of the oxidization layer on the metal surface and the formation of rust.
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Operation Guide 5571
Band
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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.
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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.
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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
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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.
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Leaving your watch in an area hotter than +60°C (140°F) for long periods can lead to problems with its
LCD. The LCD may become difficult to read at temperatures lower than 0°C (32°F) and greater than
+40°C (104°F).
Impact
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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 (G-SHOCK, BABY-G,
G-MS) 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.)
Resin Components
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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.
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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.
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Friction caused by certain conditions (strong external force, sustained rubbing, impact, etc.) can cause
discoloration of painted components.
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If there are printed figures on the band, strong rubbing of the printed area can cause discoloration.
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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.
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Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high
temperatures and humidity for long periods.
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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.
Leather Band
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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 the color of the leather band to transfer to the other items or the color
of the other items to transfer to the leather band. Be sure to dry off your watch thoroughly with a soft
cloth before storing it and make sure it is not in contact with other items.
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Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure
to clean dirt from a leather band for long periods can cause it to become discolored.
CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration.
Watch Sensors
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A watch sensor is a precision instrument. Never try to take it apart. Never try to insert any objects into
the openings of a sensor, and take care to ensure that dirt, dust, or other foreign matter does not get
into it. After using your watch where it has been immersed in saltwater, rinse it thoroughly with fresh
water.
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Rust can cause sharp areas on metal components and can cause band pins to fly out of position or to
fall out. If you ever notice any abnormality immediately stop using your watch and take it to your original
retailer or to an authorized CASIO service center.
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Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of
clothing, cause skin irritation, and even interfere with watch performance.
Premature Wear
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Leaving sweat or water on a resin band or bezel, or storing your watch an area subject to high moisture
can lead to premature wear, cuts, and breaks.
Skin Irritation
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Individuals with sensitive skin or in poor physical condition may experience skin irritation when wearing
a watch. Such individuals should keep their leather band or resin band particularly clean. Should you
ever experience a rash or other skin irritation, immediately remove your watch and contact a skin care
professional.
Battery
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The special rechargeable battery used by your watch is not intended to be removed or replaced by you.
Use of a rechargeable battery other than the special one specified for your watch can damage your
watch.
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The rechargeable (secondary) battery is charged when the solar panel is exposed to light, so it does not
require regular replacement as the primary battery requires. Note, however, that long use or operating
conditions can cause the capacity or charging efficiency of the rechargeable battery to deteriorate. If you
feel that the amount of operation provided by charging is too short, contact your original retailer or
CASIO service center.
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