USER'S GUIDE 2597
1
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
· Be sure to read "Battery" of this manual for important information you
need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the SLEEP indicator is on the display, it means that the
display is blank because the watch's Power Saving
function has turned off the display to conserve power.
Power Saving automatically turns off the display and puts
the watch into a sleep state whenever your watch is left for
a certain period where it is dark.
· The initial factory default setting is Power Saving on.
· The watch recovers from the sleep state if you move it to
a well-lit area*, if you press any button, or if you angle
the watch towards your face for reading.
*It can take up to five seconds for the display to turn on.
····· See "Power Saving Function" for more information.
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. Further details and technical information can be
found in the "Reference" section.
L
L
L
L
Dual Time Mode
Countdown Timer Mode
Alarm Mode
Timekeeping Mode
Press C.
Stopwatch Mode
L
General Guide
· Press C to change from mode to mode.
· In any mode, press B to illuminate the display.
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date.
To set the time and date
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press C to move the flashing in the sequence shown
below to select other settings.
Hour : Minutes
Day of week
Month Day
PM indicator
Seconds
3. When the setting you want to change is flashing, use
D and B to change it as described below.
Hour
Seconds
12/24-Hour
Format
Power Saving
Day
Month
Year
Minutes
Setting
Seconds
Hour, Minutes
12/24-Hour
Format
Year, Month, Day
Power Saving
Button Operation
Press D to reset to
00.
Use D (+) and B () to change the setting.
Press D to toggle between 12-hour (
12H) and
24-hour (
24H) timekeeping.
Use D (+) and B () to change the setting.
Press D to toggle Power Saving on (
ON) and
off (
OFF).
Screen
4.Press A to exit the setting screen.
· See "Power Saving Function" for details about configuring Power Saving settings.
· The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all modes.
· The day of the week is automatically displayed in accordance with the date (year,
month, and day) settings.
Countdown Timer
The countdown timer can be set within a range of one
minute to 100 hours. An alarm sounds when the
countdown reaches zero.
· Countdown timer functions are available in the
Countdown Timer Mode, which you enter by pressing
C.
To set the countdown start time
1. In the Countdown Timer Mode, hold down A until the
hour setting of the countdown start time starts to flash,
which indicates the setting screen.
2. Press C to move the flashing between the hour and minute settings.
3. While a setting is flashing, use D (+) and B () to change it.
· To set the starting value of the countdown time to 100 hours, set 0:00.
4. Press A to exit the setting screen.
Hours Minutes
Seconds
Timekeeping
Mode time
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
· When the end of the countdown is reached, the alarm sounds for 10 seconds or until
you stop it by pressing any button. The countdown time is automatically reset to its
starting value after the alarm stops.
· Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
· To completely stop a countdown operation, first pause it (by pressing D), and then
press A. This returns the countdown time to its starting value.
· The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
Alarms
You can set five independent Daily Alarms. When an
alarm is turned on, the alarm tone sounds when the alarm
time is reached. One of the alarms can be configured as a
snooze alarm or a one-time alarm, while the other four are
one-time alarms.
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
· There are five alarm screens numbered 1 through 5.
The hourly time signal screen is indicated by :
00.
· All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Timekeeping Mode Time
Alarm Time
(Hour:Minutes)
Alarm number
To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
· You can configure Alarm 1 as a snooze alarm or a one-time alarm. Alarms 2
through
5 can be used as one-time alarms only.
· The snooze alarm repeats every five minutes.
2. After you select an alarm, hold down A until the hour setting of the alarm time
starts to flash. This indicates the setting screen.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B () to change it.
· When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P indicator).
5. Press A to exit the setting screen.
x3
x4
x1
x2
:00
x5
Alarm Operation
The alarm sounds at the preset time for about 10 seconds in all modes. In the case of
the snooze alarm, the alarm operation is performed a total of seven times, every five
minutes, until you turn the alarm off or change it to a one-time alarm.
Note
· Pressing any button stops the alarm tone operation.
· Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen
Displaying the Alarm
1 setting screen
USER'S GUIDE 2597
2
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
To turn Alarms
2
2
2
2
2 through 5
5
5
5
5 on and off
1. In the Alarm Mode, use D to select a one-time alarm
(alarm number
2 through 5).
2. Press A to toggle the displayed alarm on and off.
· Turning on a one-time alarm (2 through 5) displays the
one-time alarm on indicator (ALM) on its screen.
· The one-time alarm on indicator is displayed in all
modes.
· If any alarm is on, the alarm on indicator is shown on
the display in all modes.
One-time alarm on
indicator
To select the operation of Alarm
1
1
1
1
1
1. In the Alarm Mode, use D to select Alarm
1.
2. Press A to cycle through the available settings in the sequence shown below.
SNZ ALM
ALM
SNZ indicator and one-time alarm on indicator
One-time alarm on
Snooze alarm on
Alarm off
· The applicable alarm on indicator (ALM or SNZ ALM) is displayed in all modes
when an alarm is turned on.
· The SNZ indicator flashes during the 5-minute intervals between alarms.
· Displaying the Alarm1 setting screen while the snooze alarm is turned on
automatically turns off the snooze alarm (making Alarm
1 a one-time alarm).
To turn the hourly time signal on and off
1. In the Alarm Mode, use D to select the Hourly Time
Signal.
2. Press A to toggle it on and off.
· Turning on the Hourly Time Signal displays the hourly
time signal on indicator (SIG) on its screen.
· The hourly time signal on indicator is displayed in all
modes.
Hourly time signal
on indicator
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes.
· The display range of the stopwatch is 99 hours, 59
minutes, 59.99 seconds.
· The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
· The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
· Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
elapsed time measurement.
· All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C.
Hours
Minutes
Seconds
1/100
Second
To measure times with the stopwatch
D
Start
Stop
Elapsed Time
Re-start
Clear
D
Stop
D
D
A
Split Time
D
Start
Split
Split release
Clear
A
Stop
A
D
A
Two Finishes
D
Start
Split
Stop
Clear
A
Split release
D
A
A
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
(
SPdisplayed)
Dual Time
The Dual Time Mode lets you keep track of time in a different time zone.
· The seconds count of the Dual Time is synchronized with the seconds count of the
Timekeeping Mode.
To set the Dual Time
1. Press C to enter the Dual Time Mode.
2. Use A and D to set the Dual Time Mode time.
· Each press of D increases the time setting in 30-minute
increments.
· Pressing A sets the Dual Time Mode to the same time
as the Timekeeping Mode.
Dual time
(Hours : Minutes Seconds)
Timekeeping
Mode time
Backlight
The backlight uses an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch's auto light switch automatically turns on
the backlight when you angle the watch towards your face.
· The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
· See "Backlight Precautions" for other important
information about using the backlight.
To turn on the backlight manually
In any mode, press B to illuminate the display for about
one second.
· The above operation turns on the backlight regardless of
the current auto light switch setting.
Auto light switch
on indicator
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about one second,
whenever you position your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.
Parallel to
ground
More than
40
°
Warning!
· Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.
· When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down D for about two seconds to toggle the auto light
switch on (AUTO EL displayed) and off (AUTO EL not displayed).
· The auto light switch on indicator (AUTO EL) is on the display in all modes while the
auto light switch is turned on.
Battery
This watch is equipped with a solar cell and a rechargeable battery (secondary
battery) that is charged by the electrical power produced by the solar cell. The
illustration shown below shows how you should position the watch for charging.
Example: Orient the watch so its
face is pointing at a light source.
· Note that charging efficiency
drops when any part of the solar
cell is blocked by clothing, etc.
· The illustration shows how to
position a watch with a resin band.
Important!
· Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Be sure that the watch is normally exposed to bright light
whenever possible.
Solar cell
· This watch employs a solar cell that converts light into electricity, which charges a
built-in rechargeable battery. Normally, the rechargeable battery should not need
replacement, but after very long use over a number of years, the rechargeable
battery may lose its ability to achieve a full charge. Should you notice problems with
getting the rechargeable battery to a full charge, contact your dealer or CASIO
distributor about having the rechargeable battery replaced.
· The rechargeable battery should be replaced with a CASIO-specified CTL1616
battery only. Other rechargeable batteries can cause damage to the watch.
· All data stored in memory is deleted, and the current time and all other settings
return to their initial factory defaults whenever battery power drops to Level 5 and
when you have the battery replaced.
· Turn on the watch's Power Saving function and keep it in an area normally exposed
to bright light when storing it for long periods. This helps to keep the rechargeable
battery from going dead.
Battery Power Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery's power.
Level
1
2
3
4
5
Battery Power
Indicator
(Charge Soon Alert)
Function Status
All functions enabled.
All functions enabled.
All functions enabled.
Beeper tone, backlight,
display, and buttons are
disabled.
All functions, including
timekeeping, are disabled.
· The flashing
indicator at Level 4 tells you that battery power is very low, and that
exposure to bright light for charging is required as soon as possible.
Battery power
indicator
· At Level 5, all functions are disabled and settings return to their initial factory defaults.
Functions are enabled once again after the rechargeable battery is charged, but you
need to set the time, date, and all other settings after the battery is recharged to
Level 3 from Level 5. Though the time appears on the display after the battery is
charged to Level 4, you will not be able to change the time setting until the battery
reaches Level 3.
· Leaving the watch in direct sunlight or some other very strong light source can cause
the battery power indicator to temporarily show a reading that is higher than the
actual battery level. The correct battery power indicator should appear after a few
minutes.
· If you use the backlight or any of the alarm functions a number of times during a
short period, RECOVER appears on the display and the following operations become
disabled until battery power recovers.
Backlight
Beeper tone
After some time, battery power will recover and RECOVER will disappear, indicating
that the above functions are enabled again.
USER'S GUIDE 2597
3
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Warning!
Leaving the watch in bright light to charge its rechargeable battery can cause it
to become quite hot. Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following
conditions for long periods.
· On the dashboard of a car parked in direct sunlight
· Too close to an incandescent lamp
· Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about 10 months, while the
watch is used under the conditions described below.
Operating Conditions
· Watch is not exposed to light
· Display on 18 hours per day, sleep state 6 hours per day
· 1 backlight operation (1.5 seconds) per day
· 10 seconds of alarm operation per day
· 1 countdown timer operation per day
Charge Times
Exposing the watch to light for the periods shown below each day restores the power
used by the above operating conditions.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day
(5,000 lux)
Indoor Fluorescent Lighting (500 lux)
Approximate Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
· Stable operation is promoted by frequent charging.
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
·The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
Exposure Level
(Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window
(10,000 lux)
Daylight Through a Window
on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting
(500 lux)
Approximate Exposure Time
Level 5
Level 4
Level 3
Level 2
Level 1
L
L
L
75 minutes
4 hours
8 hours
130 hours
24 hours
120 hours
5 hours
23 hours
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Power Saving Function
When turned on, the Power Saving function automatically
puts the watch into a sleep state whenever it is left in an
area where it is dark. The amount of time it takes before
the watch enters the sleep state depends on the current
battery level as shown below.
The sleep state is indicated by a blank screen with SLEEP flashing on it. In the
sleep state, all functions are enabled, except for the display.
· Wearing watch inside the sleeve of clothing can cause it to enter the sleep state.
Battery Level
Approximate Time to Sleep State
1
30 hours
2 through 4
30 minutes
To recover from the sleep state
Perform any one of the following operations.
· Move the watch to a well-lit area. It can take up to five seconds for the display to turn
on.
· Press any button.
· Angle the watch towards your face for reading.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press C seven times until the Power Saving on/off
screen appears.
3. Press D to toggle Power Saving on (
ON) and off
(
OFF).
4. Press A to exit the setting screen.
· The Power Saving on indicator (SAVE) is on the display
in all modes while the Power Saving is turned on.
Auto Return Feature
If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch automatically saves any settings you
have made up to that point and exits the setting screen.
Initial Screens
When you enter the Alarm Mode, the data you were viewing when you last exited the
mode appears first.
Scrolling
The B and D buttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Timekeeping
· Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to
00 without changing the minutes.
· With the 12-hour format, the P (PM) indicator appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
· With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
· The year can be set in the range of 2000 to 2039.
· 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 when battery power drops to Level 5.
Backlight Precautions
· The electro-luminescent panel that provides illumination loses power after very long
use.
· The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
· The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
· The backlight automatically turns off whenever an alarm sounds.
· Frequent use of the backlight runs down the battery.
Auto light switch precautions
· Wearing the watch on the inside of your wrist and movement or vibration of your arm
can cause the auto light switch to activate and illuminate the display. To avoid
running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.
· The backlight may not light if the face of the watch is
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
· The backlight turns off in about one second, even if you
keep the watch pointed towards your face.
· Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If the backlight
does not light, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back
toward you again. If this does not work, drop your arm
all the way down so it hangs at your side, and then bring
it back up again.
· Under certain conditions, the backlight may not light until
about one second after you turn the face of the watch
towards you. This does not necessarily indicate
malfunction of the backlight.
More than 15
degrees too high