MA0812-EA
Module No. 5086
Metal Components
• Failure to clean dirt from a metal band can lead to formation of rust, even if the band is
stainless steel or plated. If the watch is exposed to sweat or water, wipe it thoroughly with
a soft, absorbent cloth and then store it in a well-ventilated location to dry.
• To clean the band, use a soft toothbrush or similar tool to scrub it with a weak solution of
water and a mild neutral detergent. Take care to avoid getting solution on the watch case.
ENGLISH
• Be sure to keep all user documentation handy for future reference.
• The configuration of your watch may differ somewhat from that shown in the illustration.
Bacteria and Odor Resistant Band
To Set Time and Day
• The bacteria and odor resistant band protects against odor generated by the formation of
bacteria from sweat, which ensures good comfort and hygiene. In order to ensure
maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth
to wipe the band clean of dirt, sweat, and moisture. The bacteria and odor resistant band
suppresses the formation of organisms and bacteria. It does not protect against rash due
to allergic reaction, etc.
Crown
(Normal position)
Setting day
1. Pull the crown out to the first click.
2. Set the day by turning the crown.
3. Push the crown in to the normal
position.
First click
(Setting day)
Setting time
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage
or loss suffered by you or any third party arising through the use of this product or its
malfunction.
1. Pull the crown out to the second
click when the second hand is at 12
o’clock position and the second hand
stops.
Second click
(Setting time)
2. Set the hands by turning the crown.
3. In accordance with a time signal,
push the crown in.
Day
24-hour hand
24-hour hand
User Maintenance
The 24-hour hand indicates the current
hour of the day, making one complete
rotation every 24 hours.
Caring for Your Watch
• A dirty or rusty case or band can soil the sleeve of your clothing, cause skin irritation, and
even interfere with watch performance. Be sure to keep the case and band clean at all
times. Rust tends to form easily after the watch is exposed to seawater and then left
without cleaning.
� Do not change the day setting between 9:00 p.m. and 1:00 a.m.
If you do, the day indication may not change at midnight the next day.
• Sometimes a smudge like pattern may appear on the surface of a resin band. This will
not have any affect on your skin or clothing. Wipe the band with a cloth to clean it.
• Keep a leather band clean by wiping it with a dry cloth. Both resin bands and leather
band can become worn and cracked over time when subjected to normal daily use.
• Should your band become badly cracked or worn, be sure to have it replaced with a new
one. Request band replacement from your original retailer or an authorized CASIO
Service Center. Note that you will be charged for band replacement costs, even if your
watch is still covered by its warranty.
� For a watch with an elapsed time bezel
Rotate the elapsed time bezel to align the
minute hand.
After certain amount of time elapsed, read the graduation on
the elapsed time bezel which the minute hand points to.
The elapsed time is indicated.
10
50
mark with the
2 0
4 0
3 0
• Remember that you wear your watch next to your skin, just like a piece of clothing.
Because of this, you should always keep your watch clean. Use a soft, absorbent cloth to
wipe off any dirt, sweat, water, or other foreign matter from the case and band.
Elapsed time bezel
Dangers of Poor Watch Care
• Some water resistant models are equipped with a screw lock
crown.
Rust
• With such models, you must unscrew the crown in the
direction noted in the illustration to loosen it before you can
pull it out. Do not pull too forcibly on such crowns.
• Also note that such watches are not water resistant while
their crowns are loosened. Be sure to screw the crowns back
in as far as they will go after making any setting.
• Though the stainless steel used for the watch is highly rust-resistant, rust can form if the
watch is not cleaned after it becomes dirty. Failure of oxygen to come into contact with
the metal because it is dirty causes breakdown of the oxidization layer on the metal
surface, which leads to the formation of rust.
• 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
• Leaving sweat or water on a resin band or storing it an area subject to high moisture can
lead to premature wear, cuts, and breaks.
Specifications
Skin Irritation
Accuracy at normal temperature: ± 20 seconds per month
Battery type: SR621SW
Battery life: Approx. 3 years
• 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, or switch to a metal band. Should you ever experience a rash or other
skin irritation, immediately remove the watch and contact a skin care professional.
Battery Replacement
• Leave battery replacement up to your original retailer or authorized CASIO Service
Center.
Operating Precautions
Water Resistance
• Have the battery replaced only with the type specified by in this manual. Use of another
type of battery can cause malfunction.
• The following applies to watches with WATER RESIST or WATER RESISTANT marked
• When replacing the battery, also request a check for proper water resistance. Note that
you will be charged separately for water resistance inspection.
on the back cover.
Enhanced Water Resistance Under
Water
Initial Battery
Daily Use
5
Resistance
Under Daily
Use
• The battery that comes loaded in your watch when you purchase it is used for function
10
20
and performance testing at the factory.
Atmospheres Atmospheres Atmospheres
• This type of test battery may go dead quicker than the normally rated battery life as noted
in the User’s Guide. Note that you will be charged for replacement of this battery, even if
replacement is required within the watch’s warranty period.
On watch front or on back
cover
Hand washing, rain
No
BAR mark
Marking
5BAR
10BAR
20BAR
Yes
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Low Battery Power
Water-related work, swimming
Example of
• Low battery power is indicated by large timekeeping error, when display contents are
Daily Use Windsurfing
Skin diving
dim, or when the display does blank.
No
• Operation while battery power is low can result in malfunction. Replace the battery as
soon as possible.
• Do not use this watch for scuba diving or other types of diving that requires air tanks.
• Watches that do not have WATER RESIST or WATER RESISTANT marked on the back
cover are not protected against the effects of sweat. Avoid using such a watch under
conditions where it will be exposed to large amounts of sweat or moisture, or to direct
splashing with water.
• Even if a watch is water-resistant, do not operate its buttons or crown while it is
submersed in water or wet.
• Even if a watch is water-resistant, avoid wearing it in the bath or in areas where
detergents (soap, shampoo, etc.) are being used. Such conditions can reduce water
resistance.
• After submersion in seawater, use plain water to rinse all salt and dirt from the watch.
• In order to maintain water resistance, have the gaskets of your watch replace periodically
(about once every two or three years).
• A trained technician will know how to check 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.
• 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.
• 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. If
the fogging does not clear or if water has gotten into the watch, take the watch in for
repair immediately.
• Continued use of the watch with water inside can result in damage to electronic and
mechanical components, the face of the watch, etc.
Band
• Tightening the band too tightly can cause you to sweat and make it hard 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, or corrosion of the band can cause it to break, which may result in the
watch falling off your wrist and becoming lost. Be sure to take good care of the band and
keep it clean. Should you notice any breakage, discoloration, looseness or other problem
with the band, immediately contact your original retailer or an authorized CASIO Service
Center to have it checked, repaired, or replaced. Note that you will be charged for any
repair or replacement of the band.
Temperature
• Never leave the 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 the watch where it will be exposed
to very low temperatures, either. Temperature extremes can cause the 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 light
activity such as playing catch, tennis, etc. Dropping the 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 engage 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.
Electrostatic Charge
• Exposure to very strong electrostatic charge can cause the watch to display the wrong
time. Very strong electrostatic charge even can damage electronic components.
Chemicals
• Do not allow the 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 case, resin band,
leather band, and other parts.
Storage
• If you do not plan to use the watch for a long time, wipe it thoroughly free of all dirt,
sweat, and moisture, and store it in a cool, dry place.
Resin Components
• Allowing the 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 other items to transfer to
the resin components of the watch. Be sure to dry off the watch thoroughly before storing
it and make sure it is not in contact with other items.
• Leaving the watch where it is exposed to direct sunlight (ultraviolet rays) for long periods
or failure to clean dirt from the watch for long periods can cause it to become discolored.
• Friction caused by certain conditions (frequent 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.
• Failure to clean dirt from the watch for long periods can cause fluorescent color to fade.
Wash dirt off with water as soon as possible and then dry the watch.
• Semi-transparent resin parts can become discolored due to sweat and dirt, and if
exposed to high temperatures for long periods.
• Contact an authorized CASIO Service Center to have resin components replaced. Note
that you will be charged for replacement costs.
Natural Leather and Imitation Leather Bands
• Allowing the watch to remain in contact with other items or storing it together with other
items while it is wet for long periods can cause the color of the other items to transfer to
the natural leather or imitation leather band of the watch. Be sure to dry off the watch
thoroughly before storing it and make sure it is not in contact with other items.
• 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.
Important!
• Subjecting a natural leather or imitation leather band to rubbing or dirt can cause color
transfer and discoloration.
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