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Operation Guide 2979
1
MA0507-EA
Introduction
Thank you for purchasing this CASIO product. To ensure that it can
provide you with the years of service for which it is designed, be sure to
read this manual carefully and follow the instructions contained herein.
Pay particular attention to the Safety Precautions on the following pages.
Be sure to read the Safety Precautions before trying to use this product.
Keep this manual in a safe place for future reference.
Safety Precautions
Danger
Never use this product if you are wearing a cardiac pacemaker.
Do not use this product in the vicinity of anyone who is wearing a
cardiac pacemaker or any other type of medical device.
Should you ever feel any discomfort or any other abnormal
feeling while using this product, immediately stop using it and
contact your physician.
Do not use this product inside of an aircraft.
Caution!
Skin Irritation
Should you ever experience any skin irritation or any other
abnormality while wearing the chest strap, immediately take it off.
Since the watch and the chest strap come into direct contact with
the skin, the following conditions may cause irritation of the skin.
· When a wearer is allergic to metal or leather
· When the watch or chest strap is rusty dirty, sweaty, etc.
· When the wearer is in poor physical condition
· Tightening the chest strap too tightly can cause you to sweat,
and can make it hard for air to pass under the strap, which can
lead to skin irritation. Do not over-tighten the chest strap.
· Should you ever notice any abnormality, immediately stop
using the product and consult a physician.
Caring for This Product
To clean the product, wipe it with a soft, dry cloth, or with a cloth
that has been moistened in weak solution of water and a mild
neutral detergent. Wring out all excess liquid from the cloth
before wiping. Never use thinner, benzene, alcohol, or any other
volatile agent to clean the product.
Use of the Product
When putting on or taking off the chest strap, make sure you do
not twist, bend, or stretch it excessively.
Take care not to drop the product or otherwise subject it to strong
impact.
To avoid unexpected accidents, always check around you to
ensure you are in a safe place before looking at the display of the
watch. Looking at the watch while marathoning or jogging on the
open road, while riding a bicycle, or operating a motor vehicle
can lead to accidents.
Takes care to avoid running into others.
Should the watch stop running, have the battery replaced as
soon as possible.
Take care to avoid breaking your fingernails when fastening and
unfastening the band. Particular care is required by people with
long fingernails.
To avoid skin irritation due to unexpected injury or allergy, do not
wear the watch while sleeping.
When picking up or otherwise coming into contact with a child,
remove the watch from your wrist to avoid injury to the child or
causing irritation of the child's skin.
Never try to take the watch apart!
Never try to take the watch apart. Doing so creates the risk of
personal injury and malfunction of the watch.
Battery Replacement
When the watch's battery is replaced, foreign matter adhering to
contact surfaces can cause a loss of water resistance. In order to
ensure water resistance is maintained and the watch performs at
the level for which it is designed, make sure you always request
battery replacement from your dealer or CASIO distributor.
Keep backup copies of data!
Make sure you always keep separate written copies of important
data to protect against its loss. Malfunction, repair, and battery
replacement can cause memory contents to be deleted.
Warning!
Do not use this product during scuba diving or other type of
diving that requires special equipment.
· This product is not a diving watch. Improper use can lead to
serious accident. Do not wear the chest strap while you are
immersed in water.
For Safe Operation
Do not use this product in the vicinity of a microwave oven, TV,
computer, or cell phone, or while inside of an automobile or train.
This product may not produce correct readings if used in the
vicinity of a TV or radio transmitter.
Do not leave this product on the dashboard of an automobile or in
any other location that is subject to very high temperatures.
Never put on the chest strap after it has been in a very hot
location for a long time. Doing so creates the risk of burn injury.
If you do not have the stamina to exercise for long periods, if you
are suffering from any type of ailment, or if you are unsure of your
physical condition, consult a physician before using this product.
Should you ever start to feel discomfort or any other abnormal
feeling while using this product, immediately stop using it and
remove the chest strap.
Always take care of the situation around you whenever operating
or using this product.
Keep the chest strap out of the reach of young children.
Handling Batteries
Whenever removing the button type battery that powers the
watch or sensor bar, take care to ensure that the battery is not
swallowed accidentally. Special care is required where young
children are present.
Keep batteries out of the reach of small children. Should a battery
ever be swallowed accidentally, contact a physician immediately.


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Operation Guide 2979
2
Features
I Heart Rate Monitor
Keeps track of your heart rate, exercise intensity, and
exercise time.
Measurement system:
Constant monitoring of electrocardiogram by strap
type electrodes
Transmission method:
Heartbeat detected by the chest strap and sent to the
watch.
I Stopwatch
100 hours maximum, 1/100 second, lap/split times
I Lap/split memory
····· Number of lap/split memories: 200 max.
Lap time, split times, lap average heart rate, lap
average intensity
· Exercise data memory:
Total exercise time, exercise time within target heart rate range,
exercise time in excess of target heart rate range, exercise time below
target heart rate range, best lap time, average heart rate, energy
consumed, cumulative exercise time, cumulative energy consumed
I Timer
Number of timers: 2
Measurement unit: 1/10 second
Measurement range: 100 hours
Setting unit: 30 seconds
Number of repeats: 1 to 99, endless
· Settable number of repeats; single/twin switching
I World Time
31 cities (29 time zones), summer time ON/OFF
I Alarms
Three (hour and minute setting, ON/OFF)
Hourly Time Signal (ON/OFF)
I Display Illumination
For easy reading in the dark
Lap Time and Split Time
A lap time is the time that elapses during a specific portion of the
race, such as a lap around a track, while a split time is the time
spent from the beginning of a race up to a certain point.
Lap 1
Split 1
Split 2
Split 3
Lap 2
Lap 3
Stop
Start
Lap Time Example
Measuring the lap time for one lap of a track event, car race, etc.
Split Time Example
Measuring the split at the 5 km and 10 km points of a marathon.
Display Illumination
In any mode, press the F button to illuminate the display for easy
reading in the dark.
You can specify 1.5 seconds or 3 seconds as the duration of display
illumination.
Important!
· The light may be difficult to see if you turn it on under bright sunlight.
· Illumination will turn off if any beeper operation (alarm or button
operation tone) is performed while the display is illuminated.
· You may notice a slight sound from the watch while the face is
illuminated. This is the sound of EL panel vibration, and does not
indicate malfunction.
Read this first!
This product is intended for use as an exercise support tool only.
It is not a medical device.
· Never use this product if you are wearing a cardiac pacemaker or any
other type of medical device.
· Do not use this product in the vicinity of anyone who is wearing a
cardiac pacemaker or any other type of medical device.
· Do not wear this product while riding on an aircraft. Doing so creates
the risk of interference with the aircraft's equipment.
· Do not wear this product while swimming. The water resistance of the
sensor bar does not cover immersion in water. Communication
between the sensor bar and watch is not possible in water.
· Do not use this product if the strap causes skin irritation or any other
abnormality.
· To clean the product, wipe it with a soft, dry cloth, or with a cloth that
has been moistened in weak solution of water and a mild neutral
detergent. Wring out all excess liquid from the cloth before wiping.
Never use thinner, benzene, alcohol, or any other volatile agent to
clean the product.
General Guide
Watch
Button
Button
Button
Button
Button
Button
(Mode Switching)
(Light)
LCD
····· Selecting 12-hour or 24-hour Timekeeping
Each press of the B or E button toggles the timekeeping format
between 12-hour and 24-hour.
Chest Strap
Sensor Bar, Inside Surface
Back
Sensor bar
Sensor pads
Battery


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Operation Guide 2979
3
Modes and Display Screens
Timekeeping Mode
Personal Data Mode
Stopwatch Mode
Alarm Mode
Data Recall Mode
World Time Mode
Timer Mode
Hour, minute, second
Day of the week
Month, day, year
· Stop
· Reset (Data to memory)
· Start
· Stop
· Reset (Data to memory)
· Start
· Lap/Split
Using the Stopwatch
This section provides information about the stopwatch, and some basic
information about the heart rate monitor.
Using the Stopwatch
····· Measuring Unit: 1/100 second
····· Measuring Capacity: 99:59'59.99"
····· Lap/Split Count Range: 999
····· Cumulative Exercise Time: 9,999 hour, 59 minutes
····· Cumulative Consumed Energy: 239,005 kcal (999,999 kJ)
To use the stopwatch
Before measuring heart rate and exercise intensity, be sure to first
configure your personal information and put on the chest strap.
To enter the Stopwatch Mode, press the D button
once while in the Timekeeping Mode.
I Elapsed Time Measurement
Start
Stop
Reset
Whenever you press the B button to reset
the stopwatch to all zeros, the data from the
last measurement operation are stored in
memory.
····· Cumulative Time Measurement
Pressing the E button to restart the
stopwatch without resetting it to all zeros
resumes elapsed time measurement from
where it was last stopped.
Number of remaining laps
Current time
Number of laps
Split time
(Hours, Minutes, Seconds, 1/100 second)
Lap time
(Hours, Minutes, Seconds, 1/100 second)
Lap time
Lap time
Split time
Number
of laps
Number
of laps
Split time
Number
of laps
Lap/split time
Split/lap time
Split/lap time
Heart rate
Intensity
(2 seconds)
I Recording Lap/Split Times
Start
Stop
Reset
Lap/split
Lap/split
The watch will exit the lap/split screen
automatically after about eight seconds.
Stopwatch Mode Screens
Reset Screen
Elapsed Time Screen
To switch between lap time and split time
Each press of the A button switches the display between lap time and
split time.
To display the heart rate screen
Hold down the A button for about two seconds to switch from the lap
time or split time screen to the heart rate screen.
· Pressing the A button while the heart rate screen is displayed will
switch between lap time and split time screen.


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Operation Guide 2979
4
Configuring Personal Information
Before the watch can calculate the energy you consume and your
exercise intensity, you need to configure a number of personal
information settings. When configuring personal information, you can
also turn the target alarm on or off, and specify the units of measurement
to use for energy and body weight.
Personal information settings are configured in the
Personal Data Mode, which you enter by pressing
the D button six times while in the Timekeeping
Mode.
Personal Data Mode Screen
Important!
· You will not be able to perform the following procedure if the
Stopwatch Mode is not reset to all zeros. If you have trouble
performing the following procedure, enter the Stopwatch Mode and
press the B button to reset it to all zeros.
To configure personal data settings
1. In the Personal Data Mode, hold down
the A button for about two seconds
until the ALM screen appears with either
OFF or On flashing at the bottom of the
display.
2. Configure your personal data settings.
· Use the D button to scroll between
setting screens.
· Use the E and B buttons to change
the currently selected setting. Holding
down either button changes the
setting at high speed.
· For information about each setting,
see "Personal Information Settings".
3. After all the settings are the way you
want, press the A button to exit the
setting screen.
· The watch also will exit the setting
screen automatically if you do not
perform any operation for about two or
three minutes.
(2 seconds)
I Age
Use the E (+) and B (­) buttons to
change the displayed value in the range of
15 to 70.
I Gender
Use the E or B button to toggle between
MALE and FEMALE.
I Consumed Energy Unit
Use the E or B button to toggle between
KCAL (kilocalories) and KJ (kilojoules).
I Body Weight Unit
Use the E or B button to toggle between
kg (kilograms) and lb (pounds).
I Weight
Use the E (+) and B (­) buttons to
change the displayed value in the range of
20 to 200 kilograms or 45 to 440 pounds.
WEIGHT
Personal Information Settings
I Target Alarm On/Off
Press the E button to toggle the target
alarm on and off.
· When turned on, the target alarm will
sound whenever your heart rate goes
outside of the target range you set. The
target alarm will also sound every minute
if your heart rate remains outside of the
target range.
I Target Range Upper Limit
Use the E (+) and B (­) buttons to
change the displayed value in the range of
1 to 220.
I Target Range Lower Limit
Use the E (+) and B (­) buttons to
change the displayed value in the range of
[resting heart rate setting plus 1] to [target
range upper limit minus 1].
I Resting Heart Rate
Use the E (+) and B (­) buttons to
change the displayed value in the range of
30 to [target range lower limit minus 1] (145
maximum).
· Measure your heart rate before getting
up when you awake in the morning. This
is your resting heart rate.
REST-HR
LIMIT LOW
LIMIT HIGH
TARGET
Monitoring Your Heart Rate During
Exercise
This section explains what you need to do to monitor your heart rate
while exercising. This section assumes that you have already configured
your personal information settings.
Getting Ready
Before exercising, you need to attach the chest strap to your chest and
synchronize the signal between the sensor bar and watch.
Certain types of heart rate monitors can cause interference with the
signal sent by the sensor bar to your watch. If you suspect that you are
getting interference, move away from the other heart rate monitor.
To attach the chest strap to your chest
1. Slightly moisten the two sensor pads
(diamond pattern areas) on the inside
surface of the sensor bar. This will
provide better contact for the sensor
pads.
2. Insert one of the tabs on either end of the strap into one of the holes
in the sensor bar, from the inside of the sensor bar. Secure the tab in
place so it lays down flat as shown in the illustration.
3. Wrap the chest strap around your chest so it is in direct contact with
your skin, and secure the tab at the other end of the strap to the other
hole of the sensor bar. Fasten the strap securely to ensure that it
does not slip down while you are exercising.
4. Make sure that the sensor pads are located above your rib cage.
· Take care that you do not fasten the chest strap too tightly.
Moisten
Tab


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Operation Guide 2979
5
Heart Rate Monitor Troubleshooting
If this happens:
No heart rate appears on
the display, or displayed
values are excessive or
vary widely.
Heart rate measurement
suddenly stops
automatically.
Interference in the signal
from the chest strap.
The watch does not
calculate energy
consumed.
The energy consumed
value is strange.
Check this:
Is the strap attached to your chest correctly?
·Your heart rate cannot be detected
correctly if the strap is not attached to your
chest correctly.
·See "Monitoring Your Heart Rate During
Exercise".
Are the sensor bar's sensor pads (diamond
pattern areas) wet?
·Your heart rate cannot be detected if your
skin is dry.
·Warm up until you start sweating or
moisten the sensor pads with water.
Are the sensor bar's sensor pads dirty?
·Dirty sensor pads interfere with stable
heart rate pickup.
·Clean the sensor pads as required. To clean
the sensor pads, wipe them with a soft, dry
cloth, or with a cloth that has been moistened
in weak solution of water and a mild neutral
detergent. Wring out all excess liquid from
the cloth before wiping. Never use thinner,
benzene, alcohol, or any other volatile agent
to clean the sensor pads.
Is the sensor bar's battery dead?
·If so, contact your dealer or CASIO
distributor to have the battery replaced.
Is there some source of electromagnetic
waves (high-tension power lines, TV, cell
phone, etc.) nearby?
·Electromagnetic waves can make normal
heart rate detection and communication
impossible.
·Possible sources of electromagnetic
waves are: signal equipment, overhead
railway cables, electric bus cables,
streetcars, automobiles, motorcycles,
computers, motorized fitness equipment,
medical devices, electronic security gates,
radios, railway crossings, TV transmitters,
radar sites, etc.
Do you have heart trouble?
·Normal readings are not possible if you
have a heart abnormality that causes
changes in the waveform of an
electrocardiogram, or if you are suffering
from arrhythmia.
Is the watch too far from the chest strap?
·The maximum allowable distance between
the strap and watch is about 90 cm (35.4
inches). Communication is not possible
when they are too far apart.
Do you have a hairy chest?
·Hair on the chest can interfere with heart
beat detection.
Did more than one minute pass without the
watch detecting any signal from the chest
strap?
·This will cause measurement to stop
automatically. Restart the measurement
operation.
Did the battery of the sensor bar or watch
go dead during measurement?
·The RECOV indicator will appear on the
watch's display when its battery is low. If
the RECOV indicator appears frequently,
have the watch's battery replaced.
·If communication is not possible and the
RECOV indicator is not displayed, it could
mean that the sensor bar battery is dead
or that the system is malfunctioning. Take
the watch in to your dealer or CASIO
distributor.
Important!
·Data in the watch's memory will be deleted
when you have the battery replaced.
Is someone nearby using the same type of
watch as this one?
·Move away from the other watch.
Is your heart rate above 90 bpm?
·The watch will not calculate energy
consumed unless your heart rate is 90
bpm or higher.
Are your personal information settings
correct?
·The watch calculates energy consumed
using your heart rate and personal
information. Make sure your personal
information settings are correct and up to
date.
Memory
The watch maintains exercise records that contain a wealth of
information about each workout. An exercise record is created for your
last workout that you timed in the Stopwatch Mode and stored
automatically whenever you clear the stopwatch to all zeros.
Note that memory is shared by lap/split time records and exercise
records. There is also a cumulative record that keeps track of long-term
cumulative totals.
The following will give you some idea about how much memory capacity
is available.
· If you use memory to store lap/split time records only (no exercise
records), you can store up to 200 records during a single workout.
· If you use memory to store exercise records only (Start
Stop
Reset), you can store up to 42 records.
Memory Data
The following details the contents of each type of record that can be
stored in memory.
I Lap Record Data
· Lap/split times
· Average heart rate and exercise intensity per lap
I Exercise Record Data
· Date
· Exercise time
· Exercise time within target heart rate range
· Exercise time in excess of target heart rate range
· Exercise time below target heart rate range
· Best lap time
· Average heart rate and average exercise intensity
· Energy consumed during exercise
I Cumulative Data
· Cumulative exercise time: 9,999 hours, 59 minutes
· Cumulative energy consumed: 239,005 kcal (999,999 kJ)
· Average heart rate and average exercise intensity per workout
Data Save Timing
The following shows what data is stored in memory when you perform a
particular Stopwatch Mode operation.
I When you start an elapsed time operation (from all zeros)
· Date
I When you record lap/split times
· Lap time
· Split time
· Average heart rate and exercise intensity per lap
I When you reset the stopwatch to all zeros
· Exercise time
· Exercise time within target heart rate range
· Exercise time in excess of target heart rate range
· Exercise time below target heart rate range
· Best lap time
· Average heart rate and average exercise intensity
· Energy consumed during exercise
The following data items are also updated when you reset the stopwatch
to all zeros.
· Cumulative exercise time
· Cumulative energy consumed
· Average heart rate and average exercise intensity per workout
Memory Full
Storing data when memory is full automatically deletes the oldest record
currently in memory to make room for the new data.
Example 1: When the exercise record currently being created is the
only one currently in memory
Recording a new lap/split time while memory is full causes the oldest
lap/split time currently in memory to be deleted to make room for the
new one.
Example 2: When there are already exercise records in memory
All of the data of the oldest exercise record is cleared to make room
for the new data.