USER’S GUIDE 2535
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
About This Manual
purchase, be sure to carefully read this manual and keep it on hand for later reference
•
Button operations are indicated using the letters shown
when necessary.
in the illustration.
•
Each section of this manual provides you with the
Expose the watch to bright light to charge its battery before using it.
information you need to perform operations in each
You can use this watch even as its battery is being charged by exposure to bright
mode. Further details and technical information can be
light.
found in the ŇReference” section.
•
Be sure to read ŇBattery” of this manual for important
(Light)
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 ŇPower Saving Function” for more information.
Stopwatch Mode
Recall Mode
General Guide
•
Press C to change from mode to mode.
•
In any mode, press L to illuminate the display.
Timekeeping Mode
Press C.
Alam Mode
Dual Time  Mode
Countdown Timer Mode
Timekeeping
How the Stopwatch Works
Use the Timekeeping Mode to set and view the current
Hour : Minutes  Seconds
time and date.
There are two ways you can use the stopwatch: to measure elapsed time and lap/split
times like a standard stopwatch (see ŇTo measure times with the stopwatch”), and to
Year
To set the time and date
keep track of the distance you cover while jogging or running. In order to use the
1. In the Timekeeping Mode, hold down B until the
stopwatch to keep track of distance, you must first perform the steps listed below.
seconds start to flash, which indicates the setting
1. Set your basic data. See ŇBasic Data”.
screen.
2. Turn on the pacer signal. See ŇTo turn the pacer signal on and off”.
2. Press C to move the flashing in the sequence shown
below to select other settings.
Note
•
In order to obtain accurate distance calculations, you must set accurate basic data
and keep your exercise pace in accordance with the pacer signal emitted by the
12/24-Hour
Hour
Seconds
Minutes
watch.
Format
•
See ŇHow Stopwatch Data is Stored” for information about the type of data the watch
Day of week
stores in memory when you use the stopwatch.
•
Use the Recall Mode to view data stored in memory.
Month – Day
Power Saving
Year
Day
Month
•
You can view distance covered data only by recalling it in the Recall Mode. It does
PM indicator
not appear on the Stopwatch Mode screen.
To measure times with the stopwatch
3. When the setting you want to change is flashing, use D and A to change it as
described below.
Elapsed Time
Setting
Button Operation
Screen
D
A
A
A
A
➤
➤
➤
➤
Start
Stop
Re-start
Clear
Stop
Seconds
Press D to reset to 00.
Lap/Split Times
Hour, Minutes
Use D (+) and A (–) to change the setting.
A
D
D
D
A
➤
➤
➤
➤
12/24-Hour
Press D to toggle between 12-hour (12H) and
Clear
Start
Lap/Split
Stop
Next Lap/
Format
24-hour (24H) timekeeping.
Split
Note
Year, Month, Day
Use D (+) and A (–) to change the setting.
•
Pressing D to perform a lap/split time operation freezes the lap/split time at that
point on the display for about eight seconds. After that, the display returns to normal
Power Saving
Press D to toggle Power Saving on (ON) and
stopwatch time measurement.
off (OFF).
•
During a stopwatch time measurement operation, the upper part of the display
4. Press B to exit the setting screen.
shows the hour digit and the current lap/split number, the center part shows the
•
See ŇPower Saving Function” for details about configuring Power Saving settings.
current split time, and the lower part shows the current lap time.
•
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
•
When the pacer signal is turned on, it sounds for the first 30 seconds after you start
applied in all modes.
a stopwatch time measurement operation. After that, the pacer signal sounds for 30
•
The day of the week is automatically displayed in accordance with the date (year,
seconds whenever you press B.
month, and day) settings.
•
If the pacer signal does not sound even though you have it turned on, press B to
change the positions of the lap time and split time on the display. This should cause
the pacer signal to sound.
Stopwatch
Selecting the Stopwatch Screen Format
The 1/100-second stopwatch can measure elapsed time
Remaining memory
The following shows how you can control the position of the lap time and split time on
and lap/split times. The stopwatch uses the basic data you
the stopwatch screen.
Minutes
input and a pacer signal to calculate the distance you
Minutes
Seconds
cover while jogging or running. Stopwatch times and your
Hours
Lap/Split number
Lap time
Hours
Seconds
distance are also stored in memory.
•
The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
Press B.
➤
Split
•
Exiting the Stopwatch Mode while a lap/split time is
➤
time
frozen on the display clears the lap/split time and returns
to elapsed time measurement.
•
Stopwatch measurements are performed in the
Lap/Split
Stopwatch Mode, which you enter by pressing C.
More than 10 hours
Lap time
Split time
indicator
Timekeeping
•
The Lap/Split indicator uses arrows to indicate the location the lap time and split
Mode time
(elapsed) time.
•
When you first start a stopwatch operation by pressing A, both the center part and
1/100 second
the lower part of the display show minutes, seconds, and 1/100 second. Whenever
the time shown in the lower part of the display is greater than 60 minutes, the display
format changes to show hours, minutes, and seconds. Whenever the time in the
center part of the display is greater than 10 hours, the display format changes to
show hours, minutes, and seconds.
1
USER’S GUIDE 2535
Cumulative Total  Screen
Basic Data
The term Ňbasic data” refers to the pacer signal setup, and information about your
Stopwatch Record
Best Lap Time
stride length.
Screen
Screen
BEST indicator
Log Title Screen
Important!
Lap/Split number
•
You cannot change basic data settings while a Stopwatch Mode time measurement
Split time
Press A.
operation is in progress. Stopwatch operation must be stopped and the Stopwatch
Press B.
screen must be cleared to all zeros before you can change basic data settings.
•
Whenever you want to change the stride length unit, you must first reset the
Cumulative Total screen to zero. See ŇTo reset the cumulative total screen” for
Press D.
information about how to do this.
•
Be sure to update basic data values whenever the person using the watch changes.
Lap time
Pacer Signal
The pacer signal of this watch beeps in accordance with a pacer value (rate) set by
you. You can use the pacer signal to maintain a constant pace while jogging or
running. You can also turn off the pacer signal when you do not want to use it.
•
The cumulative total screen shows the total distance since the last cumulative total
•
The pacer value you set specifies the number of beeps per minute.
distance reset.
•
Turning on the pacer signal causes the watch to beep at the rate specified by the
•
The locations of the lap time and split time (middle or bottom of the display) in the
pacer value.
Stopwatch Record screen are determined by the display format you last selected in
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You can set a pacer value in the range of 100 to 200 beats per minute, in units of 5.
the Stopwatch Mode.
•
You can disable the pacer function by setting a pacer value of xxx. While the pacer
•
The BEST indicator identifies the record that contains the best lap time in the log.
value is set to xxx, the watch does not calculate distance covered.
•
If a best lap time record is deleted automatically when the log becomes full, the
BEST indicator will not be transferred to the record with the next best lap time. See
Stride Length
ŇMemory Management” for more information about automatic deletion of records.
You can specify either centimeters (XM) or inches (Yn) as the stride length unit. The
•
The unit of measurement used for the distance calculation depends on the unit you
unit you specify for the stride length unit also determines the unit of measurement
select for your stride length as shown in the table below. See ŇTo configure your
used for the distance value in the Stopwatch Mode and Recall Mode, as shown below.
basic data” for more information.
Stride Length Unit
Setting Range
Setting Increment
Distance Unit
Centimeters (XM)
40 to 190 cm
5 cm
Kilometers (km)
Selected Stride Unit
Distance Unit
Inches (Yn)
16 to 76 in
2 in
Miles (mi)
XM (centimeters)
km (kilometers)
Yn (inches)
mi (miles)
•
The following examples illustrate how you can calculate values for this setting.
239 steps required to run around a 300-meter track.
To delete a log
300 (meters)   239 (steps) = 1.255 (approximately 125 cm)
â
1. In the Recall Mode, display the title screen of the log you want to delete.
239 steps required to run around a 330-yard track.
•
See ŇTo reset the cumulative total screen” below for information about what
330 (yards)   239 (steps)   36 = 49.70 (approximately 50 inches)
â
×
happens when you select the cumulative total screen here.
To configure your basic data
2. Hold down A and D until the watch beeps and
stops flashing on the
CLR
1. While the Stopwatch Mode screen shows all zeros
display.
0 H
(
00'00''00), hold down B until the pacer value
•
This deletes the log and all the records inside it. Deleting a log does not change the
appears flashing on the display. This indicates the
cumulative total distance value.
setting screen.
2. Press C to move the flashing in the sequence shown
To reset the cumulative total screen
below to select other settings.
1. In the Recall Mode, display the cumulative total screen.
2. Hold down A and D until the watch beeps and
stops flashing on the
CLR
display.
Pacer value
Pacer signal
•
This resets the cumulative total distance to zero, without deleting any logs or
records. A new cumulative total will start with the next stopwatch operation you
Stride length unit
Stride length
perform.
3. When the setting you want to change is flashing, use
D and A to change it as described below.
Countdown Timer
You can set the countdown timer within a range of one
Setting
Screen
Button Operations
minute to 100 hours. An alarm sounds when the
Minutes
Pacer value
Use D (+) and A (–) to change the setting.
countdown reaches zero.
•
Selecting xxx disables the pacer signal.
Hours
•
You can also select auto-repeat, which automatically
Seconds
restarts the countdown from the original value you set
whenever zero is reached.
Pacer signal
Press D to toggle the pacer signal on (ON)
•
Countdown timer functions are available in the
and off (OFF).
Countdown Timer Mode, which you can enter using C.
Stride length
Use D (+) and A (–) to change the setting.
To set the countdown start time
1. While the countdown start time is on the display in the
Stride length unit
Press D to toggle between centimeters (XM)
Countdown Timer Mode, hold down B until the hour
and inches (Yn).
setting of the countdown start time starts to flash, which
•
When the pacer signal is turned on, the pacer signal sounds in accordance with the
Timekeeping Mode time
indicates the setting screen.
pacer value while the pacer signal or pacer value setting screen is on the display.
•
If the countdown start time is not displayed, use the procedure under ŇTo use the
4. Press B to exit the setting screen.
countdown timer” to diplay it.
•
If you find that the stride length unit won’t change reset the cumulative total to all
2. Press C to move the flashing between the hour and  minute settings.
zeros.
3. Use D (+) and A (–) to change the flashing item.
To turn the pacer signal on and off
•
To set the starting value of the countdown time to 100 hours, set 0:00.
1. While the Stopwatch Mode screen shows all zeros
4. Press B to exit the setting screen.
0 H
(
00'00''00), hold down B until the pacer value
appears flashing on the display. This indicates the
To use the countdown timer
setting screen.
Press A while in the Countdown Timer Mode to start the countdown timer.
2. Press C once to display the pacer signal setting
•
When the end of the countdown is reached and auto-repeat is turned off, the alarm
screen.
sounds for 10 seconds or until you stop it by pressing any button. The countdown
3. Press D to toggle the pacer signal on (ON) and off
time is automatically reset to its starting value when the alarm sounds.
(OFF).
•
Press A while a countdown operation is in progress to pause it. Press A again to
•
A pacer signal on indicator (
) appears when this
resume the countdown.
setting it turned on.
•
To completely stop a countdown operation, first pause it (by pressing A), and then
4. Press B to exit the setting screen.
press D. This returns the countdown time to its starting value.
To turn auto-repeat on and off
Recall Mode
While the countdown start time is displayed on the
Countdown Timer Mode screen, hold down D for about
Use the Recall Mode to recall and delete records stored
Distance covered
two seconds to toggle auto-repeat on (
displayed) and
by the Stopwatch Mode.
off (
not displayed).
•
Stopwatch records are stored in Ňlogs” that are created
•
When auto-repeat is turned on, the alarm sounds and
automatically by the watch. See ŇMemory Management”
countdown starts again whenever the countdown
for more information.
reaches zero. You can stop the countdown by pressing
•
The title screen of the newest log appears first whenever
A, and manually reset to the countdown start time by
you enter the Recall Mode.
pressing D.
•
Log numbers are automatically assigned in sequence,
•
Auto-repeat timing repeats up to seven times.
starting from 01.
•
All of the operations in this section are performed in the
Creation date
Log number
Recall Mode, which you enter by pressing C.
(Month – Day)
Log Title Screen
To recall stopwatch records
In the Recall Mode, use B to scroll through the log title
screens, starting from the newest one, as shown below.
When the title screen of the log you want is displayed, use
D and A to cycle through the records contained in the log.
2
USER’S GUIDE 2535
Alarms
Dual Time
You can set five independent Daily Alarms. When an
The Dual Time Mode lets you keep track of time in a
Alarm number
Dual time
alarm is turned on, the alarm tone sounds when the alarm
different time zone.
(Hour : Minutes  Seconds)
Alarm time
time is reached. One of the alarms can be configured as a
•
The seconds count of the Dual Time is synchronized
(Hour : Minutes)
snooze alarm or a one-time alarm, while the other four are
with the seconds count of the Timekeeping Mode.
one-time alarms.
To set the Dual Time
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour, and a
1. Press C to enter the Dual Time Mode.
brightness alarm that beeps whenever the watch is moved
2. Use A, B, and D to set the Dual Time Mode time.
from an area where it is dark to an area where it is light.
•
Each press of D (+) and A (–) changes the time
•
There are five alarm screens numbered 1 through 5.
setting in 30-minute increments.
The hourly time signal screen is indicated by :00. The
•
Pressing B sets the Dual Time Mode to the same time
brightness alarm screen shows ON or OFF.
as the Timekeeping Mode.
Timekeeping Mode time
•
All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Timekeeping Mode time
Backlight
To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm
The backlight uses an EL (electro-luminescent) panel that
screens until the one whose time you want to set is
Auto light switch
causes the entire display to glow for easy reading in the
displayed.
on indicator
dark. The watch’s auto light switch automatically turns on
the backlight when you angle the watch towards your face.
x3
x4
x1
x2
•
The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
•
See ŇBacklight Precautions” for other important
ON or OFF
:00
x5
information about using the backlight.
To turn on the backlight manually
•
You can configure Alarm 1 as a snooze alarm or a one-time alarm. Alarms 2
In any mode, press L to illuminate the display for about
through 5 can be used as one-time alarms only.
one second.
•
The snooze alarm repeats every five minutes.
•
The above operation turns on the backlight regardless of
2. After you select an alarm, hold down B until the hour setting of the alarm time
the current auto light switch setting.
starts to flash. This indicates the setting screen.
3. Press C to move the flashing between the hour and minute settings.
About the Auto Light Switch
4. While a setting is flashing, use D (+) and A (–) to change it.
Turning on the auto light switch causes the backlight to turn on for about one second,
•
When setting the alarm time using the 12-hour format, take care to set the time
whenever you position your wrist as described below in any mode. Note that this
correctly as a.m. (no indicator) or p.m. (P indicator).
watch features a ŇFull Auto EL Light,” so the auto light switch operates only when
5. Press B to exit the setting screen.
available light is below a certain level. It does not turn on the backlight under bright
light.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds. In the case of the snooze
Moving the watch to a position that is parallel to the ground and then tilting it
alarm, the alarm operation is performed a total of seven times, every five minutes, until
towards you more than 40 degrees causes the backlight to turn on.
you turn the alarm off or change it to a one-time alarm.
The watch also has a brightness alarm. When turned on, the brightness alarm causes
the watch to beep for 10 seconds when the watch is brought from the dark into the
Parallel to
More than
light. The following are the conditions for brightness alarm operation.
ground
40
°
•
The watch needs to be in the dark for about 30 to 35 minutes for the brightness
alarm to become activated.
•
The brightness alarm sounds about 15 to 20 minutes after the watch is next exposed
to light.
•
The brightness alarm sounds only once and then turns off automatically.
Warning!
•
Always make sure you are in a safe place whenever you are reading the
Note
display of the watch using the auto light switch. Be especially careful when
•
Pressing any button stops the alarm tone operation.
running or engaged in any other activity that can result in accident or injury.
•
Performing any one of the following operations during a 5-minute interval between
Also take care that sudden illumination by the auto light switch does not
snooze alarms cancels the current snooze alarm operation.
surprise or distract others around you.
Displaying the Timekeeping Mode setting screen
•
When you are wearing the watch, make sure that its auto light switch is turned
Displaying the Alarm  setting screen
1
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
To test the alarm
distraction, which can result in a traffic accident and serious personal injury.
In the Alarm Mode, hold down D to sound the alarm.
To turn the auto light switch on and off
2
2
5
5
To turn Alarms   through   on and off
2
5
2
2
5
5
In the Timekeeping Mode, hold down D for about two seconds to toggle the auto light
1. In the Alarm Mode, use D to select a one-time alarm
switch on (AUTO EL displayed) and off (AUTO EL not displayed).
One-time alarm
(alarm number 2 through 5).
•
The auto light switch on indicator (AUTO EL) is on the display in all modes while the
on indicator
2. Press A to toggle the displayed alarm on and off.
auto light switch is turned on.
•
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
Battery
modes.
•
If any alarm is on, the alarm on indicator is shown on
This watch is equipped with a solar cell and a rechargeable battery (secondary
the display in all modes.
battery) that is charged by the electrical power produced by the solar cell. The
ilustration shown below shows how you should position the watch for charging.
Example: Orient the watch so its
face is pointing at a light source.
1
1
To select the operation of Alarm11
1
Solar cell
1. In the Alarm Mode, use D to select Alarm1.
•
Note that charging efficiency drops
2. Press A to cycle through the available settings in the sequence shown below.
when any part of the solar cell is
blocked by clothing, etc.
SNZ indicator and one-time alarm on indicator
•
The illustration shows how to
position  a watch with a resin band.
SNZ ALM
ALM
Important!
•
Storing the watch for long periods in an area where there is no light or wearing it in
One-time alarm on
Snooze alarm on
Alarm off
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.
•
The applicable alarm on indicator (ALM or SNZ ALM) is displayed in all modes
•
This watch employs a solar cell that converts light into electricity, which charges a
when an alarm is turned on.
built-in rechargeable battery. Normally, the rechargeable battery should not need
•
The SNZ indicator flashes during the 5-minute intervals between alarms.
replacement, but after very long use over a number of years, the rechargeable
•
Displaying the Alarm 1 setting screen while the snooze alarm is turned on
battery may lose its ability to achieve a full charge. Should you notice problems with
automatically turns off the snooze alarm (making Alarm1 a one-time alarm).
getting the rechargeable battery to a full charge, contact your dealer or CASIO
To turn the hourly time signal and the brightness alarm on and off
distributor about having the rechargeable battery replaced.
1. In the Alarm Mode, use D to select the Hourly Time
•
The rechargeable battery should be replaced with a CASIO-specified CTL1616
Hourly time signal
Signal or the brightness alarm.
battery only. Other rechargeable batteries can cause damage to the watch.
on indicator
2. Press A to toggle the displayed item on and off.
•
All data stored in memory is deleted, and the current time and all other settings
•
Turning on the Hourly Time Signal displays the hourly