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Operation Guide 5105
2
To change the Daylight Saving Time (summer time) setting
1.In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
mode.
2.Press C. This will display the DST setting screen.
3.Press D to toggle between Daylight Saving Time (ON
displayed) and Standard Time (OFF displayed).
4.When the setting you want is selected, press A twice
to exit the setting mode.
• The DST indicator appears to indicate that Daylight
Saving Time is turned on.
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DST indicator
Dual Time
Dual Time lets you display the current time in another time zone called your “Dual
Time City”, in addition your Home City’s current time. This feature is very handy for
business professionals and others who need to keep track of the current time in two
different time zones.
• For information about how to display the current time in the Dual Time City in the
lower display, see “Timekeeping”.
To specify the Dual Time City
1.In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
mode.
2.Press A again. The left dial hand will move to T2 and
the current Dual Time City code will start to flash on the
upper display. This is the Dual Time City selection
screen.
3.Use D (eastward) and B (westward) to scroll through
the available city codes.
• See the “City Code Table” for information about city
codes.
4.Press A to exit the setting mode.
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Left dial hand
World Time
World Time digitally displays the current time in one of
48 cities (29 time zones) around the world. A simple
operation swaps your Home City with the currently
selected World Time City.
• The times kept in the World Time Mode are
synchronized with the time being kept in the
Timekeeping Mode. If you feel that there is an error in
any World Time Mode time, check to make sure you
have the correct city selected as your Home City. Also
check to make sure that the current time as shown in
the Timekeeping Mode is correct.
• Times in the World Time Mode are based on UTC
offsets. See the “City Code Table” for information about
the UTC offsets that are supported.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
Currently selected
World Time City
Current time in
World Time City
Right dial hand
(World Time hour)
Right Dial Hand
The right dial hand shows the current hour in the World Time City in all modes.
• The right dial hand moves just like the normal hour hand, completing one revolution
every 12 hours.
• Between the noon and midnight in the World Time Mode, a PM indicator (PM▼)
appears above the right dial hand.
▲
Press A.
One second
DateHour : Minutes Seconds
To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zones).
Holding down the button scrolls at high speed.
• When the city code (time zone) you want is selected, you can press A to display
the date. After about one second, the watch will resume regular timekeeping.
To toggle a city code time between Standard Time and Daylight Saving Time
1.In the World Time Mode, press D to display the city
code (time zone) whose Standard Time/Daylight Saving
Time setting you want to change.
2.Hold down A for about three seconds to toggle
between Daylight Saving Time (DST indicator
displayed) and Standard Time (DST indicator not
displayed).
• The DST indicator is shown in the bottom (World Time)
display while Daylight Saving Time is turned on.
DST indicator
Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time City. This
changes your Home City to your World Time City, and your World Time City to your
Home City. This capability can come in handy when you frequently travel between two
cities in different time zones.
To swap your Home City and World Time City
1. In the World Time Mode, use D to select the World Time City you want.
2. Hold down A and B until the watch beeps.
• This will make the World Time City you selected in step 1 your Home City, and cause
the hour and minute hands to move to the current time in that city. At the same time,
it will change the Home City you had selected prior to step 2 your World Time City,
and cause the content upper and lower displays to change accordingly.
• After swapping the Home City and World Time City, the watch stays in the World
Time Mode with the city that was selected as the Home City prior to step 2 now
displayed as the World Time City.
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The digital display range of the stopwatch is 23 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.
1/100 second
Hours
Minutes
Seconds
Clear
D
Start Stop Re-start Stop
D
D
D
➤ ➤ ➤
A
➤
D
Start Split
(SPL displayed)
Split release Stop
A
D
A
➤ ➤ ➤
Clear
A
➤
D
Start Split
First runner
finishes.
Display time of
first runner.
Stop
Second runner
finishes.
Split release
Display time of
second runner.
D
A
A
➤ ➤ ➤
Clear
A
➤
To measure times with the stopwatch
Elapsed Time
Split Time
Two Finishes
Countdown Timer
You can set the countdown timer start time within a range
of one minute to 60 minutes. An alarm sounds when the
countdown reaches zero.
• You also can select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
Seconds
Minutes
Start time (minutes)
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 and auto-repeat is turned off, the alarm
will sound for 10 seconds or until you stop it by pressing any button. The countdown
time is reset to its starting value automatically after the alarm stops.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero. The alarm sounds to signal when the countdown
reaches zero. The countdown is repeated up to eight times, and then stops.
• The number of the current repeat (1 to 8) is shown in the lower display.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
• To stop a countdown timer operation completely, first pause it (by pressing D), and
then press A. This returns the countdown time to its starting value.
To configure countdown start time and auto-repeat settings
1.While the countdown start time is on the display in the
Countdown Timer Mode, hold down A for about three
seconds until the minute setting of the countdown start
time starts to flash. This is the setting mode.
• If the countdown start time is not displayed, use the
procedure under “To use the countdown timer” to
display it.
2.Press C to move the flashing in the sequence shown
below, and select the setting you want to change.
Start Time
(Minutes)
Auto-Repeat
On/Off
C
3. Perform the following operations, depending on which setting currently is selected
on the display.
• While the start time setting is flashing, use D (+) and B (–) to change it.
• While the auto-repeat on/off setting (on or OFF) is flashing on the display, press
D to toggle auto-repeat on (on) and off (OFF).
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Start time (minutes)
4. Press A to exit the setting mode.
• The auto-repeat on indicator (
) is displayed on the Countdown Timer Mode screen
while this function is turned on.
• Frequent use of auto-repeat and the alarm can run down battery power.
Alarms
When an alarm is turned on, the alarm tone will sound
when its alarm time is reached. One of the alarms is a
snooze alarm, while the other four are one-time alarms.
You also can turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
• There are five alarm screens numbered
AL1, AL2,
AL3 and AL4 for the one-time alarm, and a snooze
alarm screen indicated by
SNZ. The Hourly Time
Signal screen is indicated by
SIG.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Alarm number
Alarm time
(Hour : Minutes)