Operation Guide
Operation Guide 5612 5613
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Low Battery Power
•
 Low battery power is indicated by large timekeeping error, by dim display contents, 
or by a blank display.
•
 Operation while battery power is low can result in malfunction. Replace the battery 
as soon as possible.
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•
 When replacing the battery, also request a check for proper water resistance.
•
 Ornamental resin components may become worn, cracked, or bent over time when 
subjected to normal daily use. Note that if cracking or any other abnormality 
indicating possible damage is noticed in a watch submitted for battery replacement, 
your watch will be returned with an explanation of the abnormality, without the 
requested servicing being performed.
Initial Battery
•
 The battery that comes loaded in your watch when you purchase it is used for 
function and performance testing at the factory.
•
 The 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 your watch’s warranty period.
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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
•
 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
•
 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 Replacement
•
 Leave battery replacement up to your original retailer or authorized CASIO service 
center.
•
 Have the battery replaced only with the type specified in the User’s Guide. Use of a 
different battery type can cause malfunction.
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•
 Clean water and sweat from a leather band by wiping with a soft cloth.
•
 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
•
 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.
•
 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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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.
•
 Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh 
water.
•
 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.
•
 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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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 your 
watch or its malfunction.
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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
•
 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
•
 Display figures may be difficult to read when viewed from an angle.
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Leather Band
•
 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.
•
 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.
Metal Components
•
 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.








