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Operation Guide 2877
World Time
Current time in the zone of the selected city code City code
About the Auto Light Switch
World Time shows the current time in 27 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 D. 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 on. � Wear the watch on the outside of your wrist.
To view the time in another city code In the World Time Mode, press C to scroll through city codes (time zones) to the east or A to scroll to the west. � For full information about city codes, see the �City Code Table�. � If the current time shown for a city is wrong, check your Timekeeping Mode time and Home City code settings and make the necessary changes.
Timekeeping Mode time
Parallel to ground
More than 40°
� When the currently selected time zone is one that includes mostly ocean, a value indicating the zone�s Greenwich Mean Time differential appears in place of a city code.
To toggle a city code time between Standard Time and Daylight Saving Time 1. In the World Time Mode, use A and C to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change. 2. Hold down B for about one second to toggle Daylight Saving Time (DST displayed) and Standard Time (DST not displayed). � The DST indicator is on the display whenever you display a city code for which Daylight Saving Time is turned on. � Note that the DST/Standard Time setting affects only the currently displayed city code. Other city codes are not affected.
Warning! � Always make sure you are in a safe place whenever you are reading the display of 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.
To turn the auto light switch on and off In the Timekeeping Mode, hold down C for about two seconds to toggle the auto light switch on ( displayed) and off ( not displayed). � The auto light switch on 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 will turn off automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want. To specify the illumination duration 1. In the Timekeeping Mode, hold down B until the seconds start to flash, which indicates the setting screen. 2. Press A to toggle the illumination duration setting between 2.5 seconds ( ) and 1.5 seconds ( ). 3. Press B to exit the setting screen.
Alarm
Hourly time signal on indicator Alarm on indicator AM indicator
When the alarm is turned on, the alarm sounds when the alarm time is reached. You can also turn on an Hourly Time Signal, which will cause the watch to beep twice every hour on the hour. � All of the operations in this section are performed in the Alarm Mode, which you enter by pressing D.
To set the alarm time 1. In the Alarm Mode, hold down B until the hour setting of the alarm time starts to flash, which indicates the setting screen. � This operation automatically turns on the alarm. 2. Press D to move the flashing between the hour and minute settings.
Timekeeping Mode time Alarm time (Hour : Minutes)
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.
Auto Return Feature
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.
3. While a setting is flashing, use C (+) and A (�) to change it. � When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (A indicator) or p.m. (P indicator). 4. Press B to exit the setting screen.
Scrolling
The A and C 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 through the data at high speed.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds, regardless of the mode the watch is in. � To stop the alarm tone after it starts to sound, press any button.
Initial Screens
When you enter the World Time Mode, the data you were viewing when you last exited the mode appears first.
To test the alarm In the Alarm Mode, hold down C to sound the alarm. To turn the Daily Alarm and the Hourly Time Signal on and off In the Alarm Mode, press A to cycle through the settings as shown below.
Hourly Time Signal On Indicator / Alarm On Indicator
Timekeeping
� Resetting the seconds to 00 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 reset to 00 without changing the minutes. � With the 12-hour format, the P (PM) indicator appears on the display for times in the range of noon to 11:59 p.m. and the A (AM) indicator appears 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. � 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.
Signal On Alarm On
Signal Off Alarm Off
Signal Off Alarm On
Signal On Alarm Off
� The alarm on indicator and the Hourly Time Signal on indicator are shown on the display in all modes while these functions are turned on.
World Time
Illumination
The display of the watch is illuminated using an EL
Auto light switch on indicator (electro-luminescent) panel for easy reading in the dark.
The watch�s auto light switch automatically turns on illumination when you angle the watch towards your face. � The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate. � You can specify 1.5 seconds or 2.5 seconds as the illumination duration. � See �Illumination Precautions� for other important information about using illumination.
� The World Time Mode times are calculated from the current Home City time setting in the Timekeeping Mode, using the Greenwich Mean Time (GMT) differentials associated with each city code. � The seconds count of the World Time is synchronized with the seconds count of the Timekeeping Mode. � The GMT differential is a value that indicates the time difference between Greenwich Mean Time and the time zone where a city is located. � GMT differential is calculated by this watch based on Universal Time Coordinated (UTC) data.
Illumination Precautions
To turn on illumination manually The button you need to press to illuminate the display depends on the mode you are in. � In the Timekeeping*, Stopwatch, or Countdown Timer Mode*, press C. * If the Timekeeping Mode or Countdown Timer Mode setting screen is on the display, press E. � In the Recall, World Time, or Alarm Mode, press E. � The above operation turns on illumination regardless of the current auto light switch setting.
� 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 automatically turns off whenever an alarm sounds. � Frequent use of illumination shortens the battery life.
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