
Operation Guide 3109
Stopwatch
World Time
Mode indicator
Hours : Minutes Seconds
1/100 second
The stopwatch lets you measure elapsed time, split times, and two finishes.
•The 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.
•The seconds count of the World Time is synchronized with the seconds count of the Timekeeping Mode.
•The current time in all World Time Mode cities is calculated in accordance with the Greenwich Mean Time (GMT) differential for each city, based on the current Home City time setting in the Timekeeping Mode.
•The GMT differential is the time difference of the time zone where the city is located from Greenwich Mean Time.
•GMT differential is calculated by this watch based on Universal Time Coordinated (UTC) data.
City Code Table
| Elapsed time measurement | 
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| Start | Stop | 
 | Stop | Clear | |||||
| Split time measurement | 
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| Start | Split | Split release | Stop | Clear | |||||
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| Split time and  | 
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| Start | Split | Stop | Split release | Clear | |||||
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 | First runner | Second runner | Display time of | 
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 | finishes. | finishes. | second runner. | 
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 | Display time of | 
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 | first runner. | 
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Countdown Timer
| 
 | The countdown timer can be set within a range of | 
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 | one minute to 24 hours. An alarm sounds when the | 
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 | countdown reaches zero. | 
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 | • The countdown operation continues even if you exit the | 
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 | Countdown Timer Mode. | 
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 | • All of the operations in this section are performed in the | 
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 | Countdown Timer Mode, which you enter by pressing | 
| Hours Seconds | C. | 
| Minutes | 
 | 
To use the countdown timer
Press Dwhile 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 reset to its starting value automatically after the alarm stops.
•Press Dwhile a countdown operation is in progress to pause it. Press Dagain to resume the countdown.
•To stop a countdown operation completely, first pause it (by pressing D), and then press B. This returns the countdown time to its starting value.
To set the countdown start time
1. In the Countdown Timer Mode, hold down Auntil the hours of the countdown start time start to flash, which indicates the setting screen.
2. Press Cto move the flashing between the hours and minutes.
3. While a setting is flashing, use D(+) or B 
•To set the starting value of the countdown time to 24 hours, set 0:00.
4.Press Ato exit the setting screen.
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.
Button Operation Tone
| Mute indicator | The button operation tone sounds any time you press one | 
| of the watch’s buttons. You can turn the button operation | |
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 | tone on or off as desired. | 
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 | • Even if you turn off the button operation tone, the alarm, | 
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 | Hourly Time Signal, and Countdown Timer Mode alarm | 
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 | all operate normally. | 
To turn the button operation tone on and off
In any mode (except when a setting screen is on the display), hold down Cfor about three seconds to toggle the button operation tone on (mute indicator not displayed) and off (mute indicator displayed).
•Holding down Cto turn the button operation tone on or off also causes the watch’s current mode to change.
•The mute indicator is displayed in all modes when the button operation tone is turned off.
Scrolling
The B and Dbuttons 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.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.
| City | City | GMT | Other major cities in same time zone | |
| Code | Differential | |||
| 
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| PPG | PAGO PAGO | 
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| HNL | HONOLULU | PAPEETE | ||
| ANC | ANCHORAGE | NOME | ||
| LAX | LOS ANGELES | SAN FRANCISCO, LAS VEGAS, VANCOUVER, SEATTLE, | ||
| DAWSON CITY | ||||
| 
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| DEN | DENVER | EL PASO, EDMONTON | ||
| CHI | CHICAGO | HOUSTON, DALLAS/FORT WORTH, NEW ORLEANS, | ||
| MEXICO CITY, WINNIPEG | ||||
| 
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| NYC | NEW YORK | MONTREAL, DETROIT, MIAMI, BOSTON, PANAMA CITY, | ||
| HAVANA, LIMA, BOGOTA | ||||
| 
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| CCS | CARACAS | LA PAZ, SANTIAGO, PORT OF SPAIN | ||
| YYT | ST. JOHNS | 
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| RIO | RIO DE JANEIRO | SAO PAULO, BUENOS AIRES, BRASILIA, MONTEVIDEO | ||
| RAI | PRAIA | 
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| LON | LONDON | +00.0 | DUBLIN, LISBON, CASABLANCA, DAKAR, ABIDJAN | |
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| PAR | PARIS | +01.0 | MILAN, ROME, MADRID, AMSTERDAM, ALGIERS, | |
| HAMBURG, FRANKFURT, VIENNA, STOCKHOLM | ||||
| 
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| PPG | PAGO PAGO | 
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| HNL | HONOLULU | PAPEETE | ||
| ANC | ANCHORAGE | NOME | ||
| LAX | LOS ANGELES | SAN FRANCISCO, LAS VEGAS, VANCOUVER, SEATTLE, | ||
| DAWSON CITY | ||||
| 
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| DEN | DENVER | EL PASO, EDMONTON | ||
| CHI | CHICAGO | HOUSTON, DALLAS/FORT WORTH, NEW ORLEANS, | ||
| MEXICO CITY, WINNIPEG | ||||
| 
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| NYC | NEW YORK | MONTREAL, DETROIT, MIAMI, BOSTON, PANAMA CITY, | ||
| HAVANA, LIMA, BOGOTA | ||||
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| CCS | CARACAS | LA PAZ, SANTIAGO, PORT OF SPAIN | ||
| YYT | ST. JOHNS | 
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| RIO | RIO DE JANEIRO | SAO PAULO, BUENOS AIRES, BRASILIA, MONTEVIDEO | ||
| RAI | PRAIA | 
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| LON | LONDON | +00.0 | DUBLIN, LISBON, CASABLANCA, DAKAR, ABIDJAN | |
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| PAR | PARIS | +01.0 | MILAN, ROME, MADRID, AMSTERDAM, ALGIERS, | |
| HAMBURG, FRANKFURT, VIENNA, STOCKHOLM | ||||
| 
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| CAI | CAIRO | +02.0 | ATHENS, HELSINKI, ISTANBUL, BEIRUT, DAMASCUS, | |
| JRS | JERUSALEM | CAPE TOWN | ||
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| JED | JEDDAH | +03.0 | KUWAIT, RIYADH, ADEN, ADDIS ABABA, NAIROBI, MOSCOW | |
| THR | TEHRAN | +03.5 | SHIRAZ | |
| DXB | DUBAI | +04.0 | ABU DHABI, MUSCAT | |
| KBL | KABUL | +04.5 | 
 | |
| KHI | KARACHI | +05.0 | MALE | |
| DEL | DELHI | +05.5 | MUMBAI, KOLKATA | |
| DAC | DHAKA | +06.0 | COLOMBO | |
| RGN | YANGON | +06.5 | 
 | |
| BKK | BANGKOK | +07.0 | JAKARTA, PHNOM PENH, HANOI, VIENTIANE | |
| HKG | HONG KONG | +08.0 | SINGAPORE, KUALA LUMPUR, BEIJING, TAIPEI, MANILA, | |
| PERTH, ULAANBAATAR | ||||
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| TYO | TOKYO | +09.0 | SEOUL, PYONGYANG | |
| ADL | ADELAIDE | +09.5 | DARWIN | |
| SYD | SYDNEY | +10.0 | MELBOURNE, GUAM, RABAUL | |
| NOU | NOUMEA | +11.0 | PORT VILA | |
| WLG | WELLINGTON | +12.0 | CHRISTCHURCH, NADI, NAURU ISLAND | 
*Based on data as of June 2007.
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