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Operation Guide 3153

1

MO0804-EA

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to read this manual carefully.

Keep the watch exposed to bright light

The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
using the watch where it is not exposed to light
causes the battery to run down. Make sure the
watch is exposed to light as much as possible.

When you are not wearing the watch on your
wrist, position the face so it is pointed at a
source of bright light.

You should try to keep the watch outside of
your sleeve as much as possible. Charging is
reduced significantly if the face is only partially
covered.

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Bright Light

Solar cell

All 
functions 
enabled

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Charge

Rechargeable battery

Bright Light

Electrical 
energy

Solar cell
(Converts light to 
electrical power.)

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Some or all 
functions 
disabled

Dis-

charge

Battery charges in the light.

Battery discharges in the dark.

The watch continues to operate, even when it is not exposed to light.
Leaving the watch in the dark can cause the battery to run down, which will
result in some watch functions to be disabled. If the battery goes dead, you
will have to re-configure watch settings after recharging. To ensure normal
watch operation, be sure to keep it exposed to light as much as possible.

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for
any damage or loss suffered by you or any third party arising through the
use of this product or its malfunction.

The actual level at which some functions are disabled depends on the
watch model.

Frequent display illumination can run down the battery quickly and require
charging. The following guidelines give an idea of the charging time
required to recover from a single illumination operation.

Approximately 5 minutes exposure to bright sunlight coming in through a
window
Approximately about 8 hours exposure to indoor fluorescent lighting

Be sure to read “Power Supply” for important information you need to
know when exposing the watch to bright light.

If the display of the watch is blank...

If the display of the watch is blank, it means that the watch’s Power Saving
function has turned off the display to conserve power.

See “Power Saving Function” for more information.

About This  Manual

Depending on the model of your watch, display text appears either as dark
figures on a light background or light figures on a dark background. All
sample displays in this manual are shown using dark figures on a light
background.

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.

General Guide

Press 

C

 to change from mode to mode.

In any mode (except when a setting screen is on the display), press 

L

 to

illuminate the display.

Timekeeping Mode

Press 

C

.

Rally Mode

Recall Mode

World Time  Mode

Countdown Timer

Mode

Stopwatch Mode

Alarm Mode

Timekeeping

Press the 

B

 button to toggle the lower display

between the day of the week and date, and the
currently selected World Time city and time (Dual
Time).
Use the Timekeeping Mode to set and view the
current time and date.

Current Time

Seconds

PM indicator

Hour : Minutes
Seconds

Day of week

Month – Day

Dual Time

Dual time

B

B

City code

To set the time and date

1. In the Timekeeping Mode hold down 

A

 until

the city code starts to flash, which indicates
the setting screen.

2. Use 

D

 and 

B

 to select the city code you

want.

Make sure you select your Home City code before changing any other
setting.

For full information on city codes, see the “City Code Table”.

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Read This Before You Set the Time and Date!

This watch is preset with a number of city codes, each of which represents the
time zone where that city is located. When setting the time, it is important that
you first select the correct city code for your Home City (the city where you
normally use the watch). If your location is not included in the preset city codes,
select the preset city code that is in the same time zone as your location.

Note that all of the times for the World Time Mode city codes are displayed
in accordance with the time and date settings you configure in the
Timekeeping Mode.

3. Press 

C

 to move the flashing in the sequence shown below to select the

other setting.

Seconds

12/24-Hour 

Format

Hour

Minutes

DST

Month

Year

City Code

Day

Power Saving

The following steps explain how to configure timekeeping settings only.

Summary of Contents for 3153

Page 1: ... it means that the watch s Power Saving function has turned off the display to conserve power See Power Saving Function for more information About This Manual Depending on the model of your watch display text appears either as dark figures on a light background or light figures on a dark background All sample displays in this manual are shown using dark figures on a light background Button operati...

Page 2: ... up to 99 hours 59 minutes 59 9 seconds If the time exceeds this timing reverts to zero and continues from there Before Starting Measurement The watch comes with 10 preset target times link times which you can use as is or change to the value you want You can use the B button to select the target time you want while the current target time is reset to its initial value LT 01 0 10 LT 07 1 30 LT 02 ...

Page 3: ... time Measurement time Hour Minutes Measurement date Month Day A A Total measured time Hour digits screen Total measured time TTL When the total measured time is in the range of zero to 2999 hours 59 minutes 57 seconds Minute digits screen Switches automatically at two second intervals Switches automatically at two second intervals To correct recorded times You can use the procedure below to corre...

Page 4: ... on the alarm automatically 3 Press C to move the flashing in the sequence shown below to select other settings Hour Minutes Month Day 5 Press A to exit the setting screen Screen To do this Change the hour and minutes Change the month and day Do this Use D and B With the 12 hour format set the time correctly as a m or p m P indicator To set an alarm that does not include a month and or day set for...

Page 5: ...tting between 1 5 seconds and 3 seconds 4 Press A to exit the setting screen l l l l l l l l l l lll About the Auto Light Switch Turning on the auto light switch causes illumination to turn on 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 illumination to turn ...

Page 6: ...specs we can include all the technical details Watch not exposed to light Internal timekeeping Display on 18 hours per day sleep state 6 hours per day 1 illumination operation 1 5 second per day 10 seconds of alarm operation per day Measurement of 26 Rally Mode stages per month Stable operation is promoted by frequent exposure to light Exposure Level Brightness Outdoor Sunlight 50 000 lux Sunlight...

Page 7: ... 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 Illumination turns off after a preset amount of time 1 5 or 3 seconds 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 illumination does not turn on try moving the watch ...

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