Casio EF305-1AV User Manual
MA0807-EA
1343 1794 2364 5071 5072
ANALOG (3H3E)
ENGLISH
• Be sure to keep all user documentation handy for future reference.
• Your watch may differ somewhat from the one shown in the illustration.
Notes
• Some water resistant models are equipped
with a screw lock crown.
• 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.
To Set Time and Date
[Setting date]
1. Pull the crown out to the first
click.
2. Set the date by turning the
crown.
Avoid setting the date between
the hour of 8:00 p.m. and 1:00
a.m. (The date display may not
change in the following day).
3. Push the crown in to the normal
position.
[Setting time and day of the week]
1. Pull the crown out to the second
click when the second hand is
at 12 o’clock position and the
second hand stops.
2. Set the hands by turning the
crown. As you do, the day of the
week changes accordingly.
• After setting day of the week,
carefully set the time, making
sure to distinguish between AM
and PM.
3. In accordance with a time
signal, push the crown in.
24-Hour Hand
The 24-Hour Hand indicates the
current hour of the day, making
one complete rotation every 24
hours.
■ For watch with the elapsed time bezel
Rotate the elapsed time bezel to align the
mark with 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.
Specifications
Module No.
1343 ±20 seconds per month SR916SW Approx. 3 years
1794/2364 ±20 seconds per month SR621SW Approx. 2 years
5071/5072 ±20 seconds per month SR621SW Approx. 3 years
Accuracy at normal
temperature
Operating Precautions
Water Resistance
• The following applies to watches with WATER RESIST or WATER
RESISTANT marked on the back cover.
Water
Resistance
Under
Daily Use
On watch front or
Marking
on back cover
Hand washing, rain
Water-related work,
Example
swimming
of Daily
Use
Windsurfing
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.
• 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.
No
BAR mark
Yes
No
No
No
Crown
(Normal position)
First click
(Setting
date)
Second click
(Setting time
and day of
Date
24-Hour Hand
Crown
(Normal position)
Date
24-Hour Hand
Elapsed time bezel
10
5
Atmospheres
10BAR
Yes
Yes
Yes
Yes
the week)
First click
(Setting
date)
Second click
(Setting time
and day of
the week)
50
40
Atmospheres
Day of
the week
[Module 1343/2364/5071]
Day of
the week
[Module 1794/5072]
Battery type Battery life
Enhanced Water Resistance
Under Daily Use
Atmospheres
5BAR
Yes
Yes
No
No
30
20
20BAR
Yes
Yes
Yes
Yes
10
20
• 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.
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.
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 specified by in this
manual. Use of another type of battery can cause malfunction.
• When replacing the battery, also request a check for proper water
resistance. Note that you will be charged separately for water
resistance inspection.
Initial Battery
• The battery that comes loaded in your watch when you purchase it is
used for function and performance testing at the factory.
• 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.
Low Battery Power
• Low battery power is indicated by large timekeeping error, when
display contents are dim, or when the display does blank.
• Operation while battery power is low can result in malfunction.
Replace the battery as soon as possible.
Loading...