© 2022 CASIO COMPUTER CO., LTD.
MA2210-A
User’s Guide
Watch
3517 EN
EN-1
About This Manual
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode.
EN-2
Contents
About This Manual................................................................................................ EN-1
Watch Features ..................................................................................................... EN-4
Configuring Time and Date Settings .................................................................. EN-5
Selecting a Mode .................................................................................................. EN-7
Timer Mode ......................................................................................................... EN-10
Stopwatch Mode ................................................................................................ EN-13
Alarm Mode ......................................................................................................... EN-18
Dual Time Mode .................................................................................................. EN-22
Illumination .......................................................................................................... EN-24
Specifications ..................................................................................................... EN-25
Operating Precautions ....................................................................................... EN-27
User Maintenance .............................................................................................. EN-37
EN-3
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
To set the time and date ...................................................................................... EN-5
To set the countdown start time ...................................................................... EN-10
To use the countdown timer ............................................................................. EN-11
To switch auto repeat timing and the progress beeper on and off ............... EN-12
To turn the Auto-Start function on and off ...................................................... EN-15
To set the Target Time and to turn it on and off ............................................. EN-16
To set the alarm time ......................................................................................... EN-18
To turn the daily alarm and hourly time signal on and off ............................. EN-20
To test the alarm sound ..................................................................................... EN-21
To set the Dual Time .......................................................................................... EN-22
To turn on illumination ....................................................................................... EN-24
Watch Features
◆
Timer
◆
Stopwatch
◆
Alarm
◆
Dual Time
EN-4
EN-5
Configuring Time and Date Settings
To set the time and date
1. Hold down A while in the Timekeeping Mode until
the seconds digits flash on the display because they
are selected.
2. Press C to change the selection in the following
sequence.
C
C
12/24-Hour Format
C C
Second
Hour Minute
Day Month Year
C C
C
Day of week
PM indicator
Hour
Second
Minute
Month – Day
EN-6
3. While the seconds digits are selected (flashing), press D to reset the seconds
to 00. If you press D while the seconds count is in the range of 30 to 59, the
seconds are reset to 00 and 1 is added to the minutes. If the seconds count is in
the range of 00 to 29, the minutes count is unchanged.
4. While any other digits (beside seconds) are selected (flashing), press D to
increase the number or B to decrease it. While the 12/24-hour format setting is
selected, press B or D to toggle it between 12 and 24.
• Except for when adjusting the seconds or setting the 12/24-hour format, holding
down a button changes the current selection at high speed.
• When the 12-hour format is selected, the indicator P appears on the display to
indicate “P.M.” times. There is no indicator for “A.M.” times.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to
change it except after you have the watch’s battery replaced.
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
5. After you set the time and date, press A to return to the Timekeeping Mode.
EN-7
Selecting a Mode
• Press C to change from mode to mode.
C
C
Timekeeping Mode Timer Mode
EN-8
Stopwatch ModeAlarm ModeDual Time Mode
C C
C
EN-9
• If you do not press any button for a few minutes while making settings in any mode
(indicated when settings are flashing), the watch automatically clears the setting
screen (settings stop flashing) and returns to the normal display for the mode you
are in.
• In any mode, hold down C for at least two seconds to return to the Timekeeping
Mode.
• In any mode press L to illuminate the display.
EN-10
Timer Mode
The countdown timer can be set within a range of
1second to 24 hours. When the countdown reaches
zero, an alarm sounds for 10 seconds or until you
press any button.
To set the countdown start time
1. Hold down A while in the Timer Mode. The
hours digits flash on the display because they
are selected.
2. Press C to change the selection in the following
sequence.
C
C C
Hours
Minutes Seconds
Mode indicator
Seconds
Auto repeat on indicator
Minutes
1/10 Seconds
Progress beeper
on indicator
Current time
EN-11
3. Press D to increase the selected number or B to decrease it. Holding down
either button changes the selection at high speed.
• Press B and D at the same time to clear the starting time to 0:00' 00".
• To set the starting value of the countdown time to 24 hours, set 0:00' 00".
4. After you set the countdown start time, press A twice to return to the Timer
Mode.
To use the countdown timer
1. Press D while in the Timer Mode to start the countdown timer.
2. Press D again to stop the countdown timer.
• You can resume countdown timer operation by pressing D.
3. Stop the countdown timer and then press B to reset the countdown time to its
starting value.
• When the end of the countdown is reached and auto repeat timing is off, the
alarm sounds for 10 seconds or until you stop the alarm by pressing any button.
Countdown timing stops and the countdown time is automatically reset to its
starting value after the alarm stops.
EN-12
To switch auto repeat timing and the progress beeper on and off
1. Hold down A while in the Timer Mode. The hour digits flash on the display
because they are selected. Press A again to move the flashing to the auto repeat
ON/OFF setting.
2. Press B or D to toggle auto repeat on (
) and off.
3. Press C to move the flashing to the progress beeper ON/OFF setting.
4. Press B or D to toggle the progress beeper on (
) and off.
5. Press A to return to the Timer Mode.
• When the end of the countdown is reached while auto repeat is on, the alarm
sounds, but the countdown restarts from the beginning without stopping. You
can stop the countdown by pressing D and manually reset to the start time by
pressing B.
• If you set a starting time of 10 seconds or less and have Auto Repeat turned on,
the countdown timer tone (which normally sounds for 10 seconds) sounds for only
one second.
• When the progress beeper is turned on, the watch beeps as the countdown time
passes the 10, 5, 4, 3, 2, and 1-minute marks, and the 50, 40, 30, 20, 10, 5, 4, 3, 2,
and 1-second marks.
EN-13
Stopwatch Mode
The Stopwatch Mode lets you measure elapsed
time, split times, and two finishes. The range of the
stopwatch is 23hour, 59minutes, 59.99seconds.
You can also have an alarm sound when a target
time is reached. The Stopwatch Mode also features
an Auto-Start function.
Mode indicator
Seconds
Minutes
1/100 Seconds
Target time on
indicator
Current time
EN-14
(a) Elapsed time measurement
D
D D D B
Start Stop Resume Stop Reset
(b) Split time measurement
D
B B D B
Start Split Split release Stop Reset
(c) Split time and two finishes
D
B D B B
Start Split
First runner
finishes.
Stop
Second runner
finishes.
Record time of first
runner.
Split release
Record time of
second runner.
Reset
EN-15
About the Auto-Start function
With the Auto-Start function, the watch performs a 5-second countdown. When the
countdown reaches zero, stopwatch operation starts automatically. During the final
three seconds of the countdown, a beeper sounds with each second.
To turn the Auto-Start function on and off
While the display is showing all zeros in the Stopwatch Mode, press B to toggle it
on and off.
• The indicator A.START appears and 05 is shown in the upper display while Auto-
Start is turned on. The A.START indicator is not shown and the upper part of the
display shows the current time when Auto-Start is turned off.
About the Target Time function
With the Target Time function, an alarm sounds for ten seconds whenever the time
being kept by the stopwatch reaches a target time you have preset.
EN-16
To set the Target Time and to turn it on and off
1. While the display is showing all zeros in the
Stopwatch Mode, hold down A, and the hour
digit of the target time starts to flash because it
is selected.
2. Press C to change the selection in the following
sequence.
C
C C
Hours
Minutes Seconds
3. Press D to increase the selected number or B to
decrease it. Holding down either button changes
the selection at high speed.
• Press B and D at the same time to clear the
setting to 0:00' 00".
Mode indicator
Seconds
Minutes Target time on
indicator
Hours
EN-17
4. Press A to move the flashing to the target time ON/OFF setting.
5. Press B or D to toggle the target time on and off.
6. Press A to return to the Stopwatch Mode.
Important!
The alarm will not sound if you do not turn on the target time.
• Press A, C or L to stop the alarm after it starts to sound.
EN-18
Alarm Mode
When the Daily Alarm is switched on, the alarm sounds
for 20 seconds at the preset time each day. Press any
button to stop the alarm after it starts to sound. When
the Hourly Time Signal is on, the watch beeps every
hour on the hour.
To set the alarm time
1. Hold down A until the hour digits start to flash on
the display. The hour digits flash because they are
selected.
• This operation will switch the Daily Alarm on
automatically.
2. Press C to change the selection in the following
sequence.
C
Hour
Minute
Alarm on indicator
Mode indicator
Hour
Hourly time signal on
indicator
Minute
Current time
EN-19
3. Press D to increase the selected digits and B to decrease them. Holding down
either button changes the selection at high speed.
• The format (12-hour and 24-hour) of the alarm time matches the format you
select for regular timekeeping.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning (no indicator) or afternoon (P).
4. After you set the alarm time, press A to return to the Alarm Mode.
EN-20
To turn the daily alarm and hourly time signal on and off
Press B while in the Alarm Mode to change the status of the daily alarm and hourly
time signal in the following sequence.
B
B
B B
Both OFF
Daily Alarm
Only
Hourly Time
Signal Only
Both ON
• The alarm on indicator ( ) and the Hourly Time Signal on indicator ( ) are shown
on the display in all modes while these functions are turned on.
EN-21
To test the alarm sound
Hold down B while in the Alarm Mode to sound the alarm.
• Note that pressing B also changes the alarm and the hourly time signal ON/OFF
settings.
EN-22
Dual Time Mode
The Dual Time Mode lets you keep track of the time in
another time zone. You can also select the timekeeping
format (12-hour or 24-hour) separately from the
Timekeeping Mode.
To set the Dual Time
1. Hold down A while in the Dual Time Mode. The hour
digits flash on the display because they are selected.
2. Press C to change the selection in the following
sequence.
C
Hour
Minute
3. Press D to increase the selected digits and B to decrease them. Holding down
either button changes the selection at high speed.
Mode indicator
Hour Minute
Current time
EN-23
4. After you set the time, press A to return to the Dual Time Mode.
• In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.
• In the Dual Time Mode, press B to toggle between the 12-hour and 24-hour
formats.
EN-24
Illumination
The face of the watch is illuminated for easy reading in
the dark.
To turn on illumination
In any mode (except when a setting mode, with flashing
digits is on the display), press L to illuminate the display.
Illumination Precautions
• Illumination may be hard to see when viewed under
direct sunlight.
• Illumination turns off automatically whenever an alarm
sounds.
• Frequent use of illumination runs down the battery.
EN-25
Specifications
Accuracy at normal temperature:
±
30 seconds a month
Timekeeping: Hour, minute, second, pm (P), day of the week, month, day
Time format: 12-hour and 24-hour formats
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Timer
Measuring unit: 1/10 second
Input range: 1 second to 24 hours
Others: Auto repeat function, progress beeper function
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23 hours 59 minutes, 59.99 seconds
Measuring modes: Elapsed time, split time and two finishes
Others: Target Time Alarm, Auto-Start
Alarm: Daily alarm, hourly time signal
EN-26
Dual Time
Illumination: LED (light-emitting diode)
Battery: One lithium battery (Type: CR2025)
Battery life: 10 years under the following conditions
• One 2-second light operation per day
• One 20-second alarm operation per day
Specifications are subject to change without notice.
EN-27
Operating Precautions
Water Resistance
• The information below applies to watches with WATER RESIST or WATER
RESISTANT marked on the back cover.
Water
Resistance
Under Daily
Use
Enhanced Water Resistance Under
Daily Use
5
Atmospheres
10
Atmospheres
20
Atmospheres
Marking
On watch front or on
back cover
No
BAR mark
5BAR 10BAR 20BAR
Example of
Daily Use
Hand washing, rain Yes Yes Yes Yes
Water-related work, swimming
No Yes Yes Yes
Windsurfing No No Yes Yes
Skin diving No No Yes Yes
•
Do not use your watch for scuba diving or other types of diving that requires air tanks.
OPUM-H
EN-28
• 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, 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.
• After submersion in seawater, use plain water to rinse all salt and dirt from your
watch.
• To maintain water resistance, have the gaskets of your watch replaced periodically
(about once every two or three years).
EN-29
• 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.
• 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. 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.
• Your water-resistant watch has been tested in accordance with International
Organization for Standardization regulations.
EN-30
Band
• 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.
• 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.
• 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).
EN-31
Temperature
• 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.
• 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
• 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.)
EN-32
Magnetism
• Though a digital watch normally is not affected by magnetism, very strong
magnetism (from medical equipment, etc.) should be avoided because it can cause
malfunction and damage to electronic components.
Electrostatic Charge
• Exposure to very strong electrostatic charge can cause your watch to display
the wrong time. Very strong electrostatic charge even can damage electronic
components.
• Electrostatic charge can cause the display to go blank momentarily or cause a
rainbow effect on the display.
Chemicals
• 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.
EN-33
Storage
• 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.
Resin Components
• 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.
• 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.
• Friction caused by certain conditions (strong 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.
EN-34
• 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.
• Semi-transparent resin parts can become discolored due to sweat and dirt, and if
exposed to high temperatures and humidity for long periods.
• 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
• 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.
EN-35
• 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.
• 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.
EN-36
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.
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.
EN-37
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.
EN-38
• 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.
• 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.
EN-39
• 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.
• 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.
EN-40
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.
• 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.
EN-41
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.
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.
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome
Shibuya-ku, Tokyo 151-8543, Japan
