MA0604-EA
Operation Guide 3031
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, press L to illuminate the display.
Timekeeping Mode
Stopwatch Mode (ST1)
Stopwatch Mode (ST2)
Countdown Timer Mode
Alarm Mode
World Time Mode
Press
.
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24-
hour timekeeping.
• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 p.m. and no indicator appears to the left of the
hour digits 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.
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date.
Day of week
Month – Day
Read This Before You Set the Time and Date !
The times displayed in the Timekeeping Mode and World
Time Mode are linked. Because of this, make sure you
select a Home Time zone before you set the time and
date.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
• The P indicator is not displayed when the current time is displayed in other modes.
Seconds
Stopwatches
Hour : Minutes
Your watch has two stopwatch modes:Stopwatch Mode
PM indicator
Timekeeping Mode time
*During stopwatch elapsed
time measurement,
shows the number of
hours elapsed.
(ST1) and Stopwatch Mode (ST2). Both stopwatch modes
let you measure elapsed time, split times, and two
finishes. The Stopwatch Mode (ST1) includes Auto-Start.
• A display range of the stopwatch is 999 hours,
59 minutes, 59.99 seconds.
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.
• A stopwatch continues to run, restarting from zero after
it reaches its limit, until you stop it.
• A stopwatch measurement operation continues even if
you exit a Stopwatch Mode.
• Exiting a 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 (ST1) or Stopwatch Mode (ST2),
which you enter by pressing C.
Home time zone
Seconds
Day
Minutes
Seconds
DST
Month
Home Time Zone
Year
Hour
Minutes
1/100 second
To measure times with the stopwatch
(Stopwatch Mode (ST1) and Stopwatch Mode (ST2))
3. When the setting you want to change is flashing, use D and B to change it as
described below.
Elapsed Time
Screen
50
To do this:
Do this:
Stop
Re-start
Stop
Stop
Clear
Clear
Start
00
Reset the seconds to
Press D.
Press D.
Split Time
OFF
Toggle between Daylight Saving
ON OFF
Time ( ) and Standard Time (
)
Split
(
Split release
Start
Specify your Home Time zone
Change the hour or minutes
Change the year
Use D (eastward) and B (westward).
Use D (+) and B (–).
displayed)
Two Finishes
Start
Split
Stop
Split release
Display time of
second runner.
Clear
6-30
Change the month or day
First runner finishes. Second runner
Display time of first finishes.
runner.
•
For details about time zones, see the
“
City Code Table
”
.
• See “Daylight Saving Time (DST)” for details about DST setting.
4. Press A to exit the setting screen.
About Auto-Start (Stopwatch Mode (ST1))
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
With Auto-Start, the watch performs a 5-second countdown, and stopwatch operation
starts automatically when the countdown reaches zero.
During the final three seconds of the countdown, a beeper sounds with each second.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from Standard
Time. Remember that not all countries or even local areas use Daylight Saving Time.
To use Auto-Start (ST1)
1. While the stopwatch screen is showing all zeros in the
Stopwatch Mode, press B.
• This displays a 5-second countdown screen.
• To return to the all zeros screen, press B again.
2. Press D to start the countdown.
• When the countdown reaches zero, a tone sounds and
a stopwatch timing operation starts automatically.
• Pressing D while the Auto-Start countdown is in
progress starts the stopwatch immediately.
To toggle the Timekeeping Mode time between DST and Standard Time
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press C to display the DST setting screen.
3. Press D to toggle between Daylight Saving Time
ON
OFF
displayed).
(
displayed) and Standard Time (
4. Press A to exit the setting screen.
• The DST indicator appears on the display to indicate
that Daylight Saving Time is turned on.
DST indicator
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Operation Guide 3031
World Time
Reference
World Time shows the current time in 48 cities (29 time
zones) around the world.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
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.
City code
Graphic Areas
To view the time for another city code
In the World Time Mode, press D to scroll eastwardly
through city codes.
In the World Time Mode, press B to scroll westwardly
through city codes.
There are three graphic areas named A, B, and C. The information shown in each
graphic area depends on the current mode.
Graphic area B
Current time and date in
the zone of the selected
city code
• For full information about city codes, see the “City Code
Table”.
Graphic area A
• If the current time for a city is wrong, check your
Timekeeping Mode time and time zone settings and
make necessary changes.
Graphic area C
• The following table shows the information that appears in graphic area A.
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, use D (east) and B (west) to
display the city code (time zone) whose Standard Time/
Daylight Saving Time setting you want to change.
2. Hold down A for about one second to toggle Daylight
Saving Time (DST displayed) and Standard Time (DST
not displayed).
Mode
Graphic Area A
Timekeeping Mode seconds
Timekeeping
World Time
Timekeeping Mode seconds
Sweeps from left to right
Sweeps from right to left
No indication
Stopwatch (ST1 and ST2)
Countdown Timer
Alarm
• The DST indicator is on the display whenever you
display a city code for which Daylight Saving Time is
turned on.
DST indicator
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
• In all modes, graphic area B shows the Stopwatch Mode (ST1) minutes (one
segment each for 5 minutes, 10 minutes, etc.).
• In all modes, graphic area C shows the Stopwatch Mode (ST2) minutes (one
segment each for 5 minutes, 10 minutes, etc.).
Illumination
Flash Alert
This watch has two EL (electro-luminescent) panels that
cause the entire display to glow for easy reading in the
dark. The watch’s auto light switch turns on illumination
automatically when you angle the watch for reading
towards your face.
When Flash Alert is turned on, the illumination flashes for
the alarms, the Hourly Time Signal, the countdown alarm,
and stopwatch (ST1) auto start.
Auto light switch indicator
To turn Flash Alert on and off
• The auto light switch must be turned on (indicated by
the auto light switch indicator) for it to operate.
• See “Illumination Precautions” for more important
information.
In the Timekeeping Mode, hold down D for about three
seconds to toggle Flash Alert on (Flash Alert indicator
displayed) or off (Flash Alert indicator not displayed).
• Illumination flashes twice when you turn Flash Alert on
and once when turn Flash Alert off.
Flash Alert indicator
• While Flash Alert is turned on, the Flash Alert indicator
remains on the display in all modes.
• Note that pressing D to toggle Flash Alert on or off will
also switch timekeeping between 12-hour and 24-hour
format.
To illuminate the display
In any mode, press L to turn on illumination.
• The above operation turns on illumination regardless of the current auto light switch
setting.
• You can use the procedure below to select either 3 seconds or 5 seconds as the
illumination duration. When you press L, the illumination will remain on for about
3 seconds or 5 seconds, depending on the current illumination duration setting.
Button Operation Tone
The button operation tone sounds any time you press one
of the watch’s buttons. You can turn the button operation
tone on or off as desired.
• Even if you turn off the button operation tone, the
alarms, the Hourly Time Signal, the countdown alarm,
and stopwatch auto start all operate normally.
To specify the illumination duration
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
To turn the button operation tone on and off
2. While the seconds are flashing, press B to toggle the
setting between 3 seconds ( ) and 5 seconds ( ).
3. Press A to exit the setting screen.
In any mode (except when a setting screen is on the
display), hold down C to toggle the button operation tone
on (MUTE not displayed) and off (MUTE displayed).
• Holding down C to turn the button operation tone on or off also causes the watch’s
About the Auto Light Switch
While the auto light switch is enabled, illumination turns on whenever you position
your wrist as described below in any mode.
current mode to change.
• The MUTE indicator is displayed in all modes when the button operation tone is
turned off.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you at more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
Auto Return Features
• If you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it automatically changes to the Timekeeping Mode.
• If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch automatically exits the setting screen.
Parallel to ground
More than 40°
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 at high speed.
Warning!
• Always make sure you are in a safe place whenever you are reading 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 startle 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.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you
last exited the mode appears first.
Timekeeping
00
• Resetting the seconds to
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
00
reset to
without changing the minutes.
• 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.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down B for about three seconds to toggle the auto
light switch on (auto light switch indicator displayed) or off (auto light switch indicator
not displayed).
World Time
• The auto light switch indicator is on the display in all modes while the auto light
switch is turned on.
• In order to protect against running down the battery, the auto light switch turns off
automatically approximately six hours after you turn it on.
All World Time Mode times are calculated from the current Home City time in the
Timekeeping Mode using UTC time differential values.
• The seconds count of the World Time is synchronized with the seconds count of the
Timekeeping Mode.
• The UTC differential is a value that indicates the time difference between a
reference point in Greenwich, England and the time zone where a city is located.
• The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
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Operation Guide 3031
Illumination Precautions
• The electro-luminescent panel that provides illumination loses power after very long
use.
• Illumination 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.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
• Illumination may not turn on 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.
• Illumination turns off after the preset illumination
duration (see “To specify the illumination duration”),
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 back to the
starting position (parallel with the ground) and then tilt it
back towards 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, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
City Code Table
City
Code
UTC
Differential
City
Other major cities in same time zone
PPG
HNL
ANC
LAX
Pago Pago
Honolulu
Anchorage
Los Angeles
–11.0
–10.0
–09.0
–08.0
Papeete
Nome
San Francisco, Las Vegas, Vancouver, Seattle/Tacoma,
Dawson City
DEN
MEX
CHI
Denver
Mexico City
Chicago
–07.0
–06.0
El Paso, Edmonton
Winnipeg, Houston, Dallas/Fort Worth, New Orleans
NYC
New York
–05.0
Montreal, Detroit, Miami, Boston, Panama City, Havana, Lima,
Bogota
CCS
YYT
Caracas
St. Johns
–04.0
–03.5
–03.0
La Paz, Santiago, Port Of Spain
RIO Rio De Janeiro
BUE Buenos Aires
Sao Paulo, Brasilia, Montevideo
RAI
LON
DKR
MAD
PAR
Praia
London
Dakar
Madrid
Paris
–01.0
+00.0
Dublin, Lisbon, Casablanca, Abidjan
+01.0
Milan, Amsterdam, Algiers, Hamburg, Frankfurt, Vienna
MCM Monte Carlo
ROM
BER
STO
ATH
Rome
Berlin
Stockholm
Athens
+02.0
Istanbul, Beirut, Damascus, Cape Town
JNB Johannesburg
ANK
NIC
HEL
CAI
Ankara
Nicosia
Helsinki
Cairo
JRS
MOW
JED
THR
DXB
KBL
KHI
DEL
DAC
RGN
BKK
SIN
HKG
BJS
PER
SEL
TYO
ADL
SYD
NOU
WLG
Jerusalem
Moscow
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
Dhaka
Yangon
Bangkok
Singapore
Hong Kong
Beijing
Perth
Seoul
Tokyo
Adelaide
Sydney
Noumea
Wellington
+03.0
Kuwait, Riyadh, Aden, Addis Ababa, Nairobi
+03.5
+04.0
+04.5
+05.0
+05.5
+06.0
+06.5
+07.0
+08.0
Shiraz
Abu Dhabi, Muscat
Male
Mumbai, Kolkata
Colombo
Jakarta, Phnom Penh, Hanoi, Vientiane
Kuala Lumpur, Taipei, Manila, Ulaanbaatar
+09.0
Pyongyang
+09.5
+10.0
+11.0
+12.0
Darwin
Melbourne, Guam, Rabaul
Port Vila
Christchurch, Nadi, Nauru Island
*Based on data as of December 2005.
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