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© 2013 CASIO COMPUTER CO., LTD.
MA1309-EA
Be sure to keep all user documentation handy for future reference.
Your watch may differ somewhat from the one shown in the illustration.
24-Hour Hand
Day
* Use a thin pointed object to press the depression of a button
to operate it.
Crown Operations
Some water-resistant models (100 meters, 200 meters)
have a screw-in crown. When you need to perform a crown
operation, rotate it towards you to unscrew it. Then pull the
crown out. Avoid applying undue force when pulling. The watch
loses its water resistance while the crown is unscrewed. After
performing a crown operation, fully screw the crown back in.
If your watch has a rotary bezel...
You can rotate the bezel to align its ▼ mark with the
minute hand. Then you will be able to tell how much
time has elapsed since aligning the ▼ mark.

Operating Precautions

Water Resistance
The following applies to watches with WATER RESIST or WATER RESISTANT marked
on the back cover.
On watch front or on
Marking
back cover
Hand washing, rain
Water-related work,
Example
swimming
of Daily
Use
Windsurfi ng
Skin diving
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.
To maintain water resistance, have the gaskets of your watch replaced 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 it 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.
Your water-resistant watch has been tested in accordance with the International
Organization for Standardization regulations ISO2281 and FTC (USA) "GUIDE FOR THE
WATCH INDUSTRY." Guide 5.
Band
Tightening the band too tightly can cause you to sweat and make it diffi cult 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 fi nger.
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 engaged 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
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome
Operation Guide 5374/5392
Shibuya-ku, Tokyo 151-8543, Japan
Day of the week
Location depends on module number.
5374
*
A
*
B
Crown
Current
Water
Enhanced Water Resistance Under Daily Use
Resistance
5
10
Under Daily
Atmospheres
Atmospheres
Use
No
5BAR
10BAR
BAR mark
Yes
Yes
Yes
No
Yes
Yes
No
No
Yes
No
No
Yes
Printed in China
MA1309-A
ENGLISH
To adjust the time setting
When the second hand is at 12 o'clock, pull the
Rotate the
Crown
5392
Push the
Crown
Note
Take care that you set the correct AM or PM time.
When changing the time, move the minute hand four or fi ve minutes past your fi nal
setting, and then back it up to the setting you want.
The 24-Hour Hand indicates the current hour of the day. It makes one complete
rotation every 24 hours.
To change the day and day of the week settings
Press B to change the day and A to change the day of the week.
Note
Crown
The day setting uses a 31-day month. Make adjustments for months of shorter
lengths.
Avoid changing the day and day of the week settings between the hours of 9 p.m.
and 4 a.m.
Otherwise, the day and day of the week may not change correctly at midnight.
Loosen
Specifi cations
Start
Accuracy: ±20 seconds average per month
Battery: One silver oxide battery (Type: SR927SW)
Battery Life: Approximately 3 years
Elapsed time
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.
20
Atmospheres
Important!
Subjecting a natural leather or imitation leather band to rubbing or dirt can cause color
20BAR
transfer and discoloration.
Yes
Metal Components
Failure to clean dirt from a metal band can lead to formation of rust, even if the band is
Yes
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.
Yes
To clean the band, use a soft toothbrush or similar tool to scrub it with a weak solution of water
Yes
and a mild neutral detergent. Take care to avoid getting solution on the watch case.
Bacteria and Odor Resistant Band
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.
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.

User Maintenance

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.
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.
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.
Dangers of Poor Watch Care
Rust
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.
Skin Irritation
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.
Have the battery replaced only with the type specifi ed by in this manual. Use of another
type of battery can cause malfunction.
out.
Crown
to change the time setting.
back in.
Día
* Para accionar un b
objeto fi no y puntia
Operaciones con la
Algunos modelos resi
vienen con una coron
operación con la coro
desbloquearla. A cont
corona con una fuerza
no es resistente al agu
No olvide de volver a
de realizar una operac
Si su reloj tiene un
Puede girar el bisel ha
con la manecilla de m
saber cuánto tiempo
que se alineó con la m
Precauciones de
Resistencia al agu
Lo siguiente correspon
(resistente al agua) es
En el frente de
Marca
la cubierta po
Lavado de ma
Trabajo relacio
Ejemplo
agua, natació
de uso
diario
Práctica de w
Buceo de sup
No utilice el reloj dura
requiera botellas de a
Los relojes que no
cubierta posterior no
circunstancias donde
a salpicaduras de ag
Aun si el reloj es resis
está sumergido en ag
Aun si el reloj es resi
detergentes (jabón, ch
Después de sumergi
suciedad del reloj.
Para mantener la resi
(aproximadamente un
Siempre que haga reem
necesarias para man
utilizar herramientas
servicio autorizado C
Algunos relojes resiste
realizar cualquier otra a
La superfi cie interior
a una caída brusca d
existirá ningún proble
reloj, llévelo a reparar
El uso continuo del re
electrónicos o mecán
Su reloj resistente al
Organización Internac
RELOJERA" de la FT
Correa
Si ajusta demasiado la
por debajo de ella, pro
correa y su muñeca de
El deterioro, el óxido
cuyo caso el reloj se d
mantenerla limpia. Si n
con la correa, póngas
de servicio autorizado
que se le cobrará cua
Temperatura
Nunca deje el reloj so
otro lugar donde que
quede expuesto a tem
que el reloj atrase o s
1
Impacto
Su reloj está diseñado
y actividades ligeras t
si deja caer el reloj o
Tenga en cuenta que lo
utilizarse mientras ma
una intensa vibración
Magnetismo
Un motor que utiliza
combinados (analógi
(altavoces de audio, c
potentes, dicho magn

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