CASIO EFA120D-1A
Manual de Usuario

Operation Guide 4334
3. Perform the following operations, depending on which setting is currently selected on the display. � While the start time setting is flashing, use D (+) and B (�) to change it. � Set 0:00 to specify 100 hours. � While the auto-repeat on/off setting (0N or 0F) is flashing on the display, press D to toggle auto-repeat on (0N) and off (0F). 4. Press A to exit the setting screen. � 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.
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Illumination
Auto light switch on indicator

This watch has an EL (electro-luminescent) panel that causes 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 towards your face. � The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate. � See �Illumination Precautions� for other important information about using illumination.

Alarm
Alarm on indicator AM indicator

To turn on illumination manually In any mode, press L to illuminate the display for about 1.5 seconds. � The above operation turns on illumination regardless of the current auto light switch setting.

When the alarm is turned on, the alarm sounds when the alarm time is reached. You also can 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 C.

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, except for the Hand Setting Mode setting screen. 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.

Alarm time (Hour : Minutes)

Hourly time signal on indicator

Parallel to ground

More than 40°

To set the alarm time
1. In the Alarm Mode, hold down A until the hour setting of the alarm time starts to flash, which indicates the setting screen. � This operation turns on the alarm automatically. 2. Press C to move the flashing between the hour and l ll minute settings. 3. While a setting is flashing, use D (+) and B (�) 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 A to exit the setting screen.

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.

Alarm Operation
The alarm sounds at the preset time for 10 seconds, regardless of the mode the watch is in. � To stop the alarm tone after it starts to sound, press any button.

To test the alarm In the Alarm Mode, hold down D to sound the alarm. To turn the daily alarm and the Hourly Time Signal on and off In the Alarm Mode, press D to cycle through the settings shown below.
Dark figures on a light background

Light figures on a dark background

� 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
The World Time Mode digitally displays the current time in
Date and day of the week 50 cities (30 time zones) around the world. in the selected city � The times kept in the World Time Mode are

City code Current time in selected city

To view the time in another city While in the World Time Mode, press D to scroll eastward through the city codes (time zones) or B to scroll westward. To toggle a city code time between Standard Time and Daylight Saving Time 1. In the World Time Mode, use D and B to display the DST indicator city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change. 2. Hold down A to toggle Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed). � The DST indicator is shown on the World Time screen while Daylight Saving Time is turned on. � Note that changing the Daylight Saving Time for any city code causes the setting to be applied to all city codes.

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To turn the auto light switch on and off In the Timekeeping Mode, hold down D for about three 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 about six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want. � Illumination is always disabled (regardless of the current auto light switch setting) while an alarm is sounding.

Reference
Alarm Off Signal Off Alarm On Signal Off Alarm Off Signal On Alarm On Signal On

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.

Stopwatch Modes
The following describes how to perform data storage and measurement in the stopwatch modes.
Alarm Off Signal Off Alarm On Signal Off Alarm Off Signal On Alarm On Signal On

Managing Memory Data Pressing the D button in the Single Stopwatch Mode or the D or B button in the Dual Stopwatch Mode to start a new elapsed time measurement operation creates a new log in memory. A new log is created each time you start a new elapsed time measurement operation. A log contains a log title screen, and records of all the lap times that are recorded during elapsed time measurement. � The capacity of the watch's memory is 50 records. � If you are adding records to the only log in memory and watch memory becomes full, adding another record causes the oldest record in the log to be deleted automatically to make room for the new record. � If you are adding records to a log when there are multiple logs in memory and watch memory becomes full, adding another record causes the oldest log in memory and all of its records to be deleted automatically to make room for new records. How stopwatch data is stored The following table shows how stopwatch data is stored when you perform stopwatch button operations. Single Stopwatch Mode data Stopwatch Data Storage Description Button Operation From all-zeros, press D to start. Press D to display lap time. Press A to stop elapsed time measurrement and reset. Creates a new log (ST1). Stores the date the button was pressed, and the log number. Creates a new record with each button operation. Stores the lap time and total elapsed time at the point the button is pressed. Resets the elapsed time to all zeros without recording data.

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 the UTC differential of your Home Time and the current setting of the Timekeeping Mode time. � Select a city code in the World Time Mode to display the current time in any particular time zone around the globe. See the �UTC Differential/City Code List� for information about the UTC differential settings that are supported. � All of the operations in this section are performed in the World Time Mode, which you enter by pressing C.

Dual Stopwatch Mode data Stopwatch Data Storage Description Button Operation From all-zeros, Creates a new log (ST2). Stores the date the button was press D or B to pressed, and the log number. start. Press D or B to Creates a new record with each button operation. Stores the lap display lap time. time the point the button is pressed. Press A to stop elapsed time measurement and reset. Resets the elapsed time to all zeros without recording data.

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