Casio 3726 Alarms, Stopwatch, Illumination, Countdown Timer, Alarm Operation, About the Auto Light Switch

Operation Guide 3725 3726

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, use Band D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change in the bottom dial.

• Pressing Ain the World Time Mode causes the applicable city code to appear in the bottom dial for about one second.

2. Hold down Ato toggle Daylight Saving Time (DST indicator displayed in the bottom dial) and Standard Time (DST indicator not displayed).

DST indicator

•Note that you cannot use the World Time Mode to change the DST setting of the Home City code you currently have selected in the Timekeeping Mode. See “To change the Daylight Saving Time (summer time) setting” for information about turning the Home City code DST setting on and off.

•Note that you cannot switch between Standard Time and Daylight Saving Time while GMT is selected as the city code.

•The DST indicator will appear 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.

Alarms

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 and auto-repeat is turned off, the alarm sounds for 10 seconds or until you stop it by pressing any button. The countdown time is automatically reset to its starting value after the alarm stops.

•Press Dwhile a countdown operation is in progress to pause it. Press Dagain to resume the countdown.

•To completely stop a countdown operation, first pause it (by pressing D), and then press B. This returns the countdown time to its starting value.

To turn auto-repeat on and off

1. While the countdown start time is displayed in the

	bottom dial in the Countdown Timer Mode, hold down
	A until the current countdown start time starts to flash
	in the bottom dial, which indicates the setting screen.
	2. Press Cuntil the auto-repeat setting is flashing in the
	bottom dial.
	3. Press Dto turn auto-repeat on (		displayed) and
	off (	displayed).
	4. Press Ato exit the setting screen.
Number of repeats	• When auto-repeat is turned on, the alarm sounds and
	countdown starts again whenever the countdown

reaches zero. You can stop the countdown by pressing D, and manually reset to the countdown start time by pressing B.

•Auto-repeat timing repeats up to nine times.

Mode indicator

Alarm number

You can set five independent daily alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached.

Stopwatch

Alarm time (Hour : Minutes)

You can also turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

•The alarm number (A1 through A5) indicates an alarm screen. 00 is shown for the alarm number when the Hourly Time Signal screen is displayed.

•All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

Mode indicator 1/100 second

The stopwatch lets you measure elapsed time, split times, and two finishes.

• The display range of the stopwatch is 99 minutes, 59.99

seconds.

• The stopwatch continues to run, restarting from zero

after it reaches its limit, until you stop it.

• Exiting the Stopwatch Mode while a split time is frozen

in the bottom dial clears the split time and returns to

elapsed time measurement.

• The stopwatch measurement operation continues even

if you exit the Stopwatch Mode.

•

To set an alarm time

1. In the Alarm Mode, use Dto scroll through the alarm

Minutes Seconds

All of the operations in this section are performed in the

Stopwatch Mode, which you enter by pressing C.

Alarm on indicator

numbers until the one whose time you want to set is

displayed.

A1 A2 A3

00 A5 A4

2.Hold down Auntil the hour digits of the alarm time start to flash in the bottom dial, which indicates the

setting screen.

• This automatically turns on the alarm.

To measure times with the stopwatch
Elapsed Time
D	➤D	➤D	➤D	➤B
Start	Stop	Re-start	Stop	Clear
Split Time
D	➤B	➤B	➤D	➤B
Start	Split	Split release	Stop	Clear
Two Finishes

3.Press C to move the flashing between the hour and minute settings.

4.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. (no indicator) or p.m. ( indicator on the bottom dial).

5.Press A to exit the setting screen.

Alarm Operation

The alarm sounds in all modes at the preset time for about 10 seconds, or until you stop it by pressing any button.

D	➤B	➤D	➤B	➤B
Start	Split	Stop	Split release	Clear
	First runner	Second runner	Display time of
	finishes.	finishes.	second runner.
	Display time of
	first runner.

Illumination

To test the alarm

In the Alarm Mode, hold down Bto sound the alarm.

To turn an alarm and the Hourly Time Signal on and off

1.In the Alarm Mode, use D to select an alarm or the Hourly Time Signal.

2.When the alarm or the Hourly Time Signal you want to set is selected, press Bto turn it on and off. The current setting is indicated by following indicators.

Indicates alarm is ON.

Indicates Hourly Time Signal is ON.

•The alarm on indicator () and the Hourly Time Signal on indicator () remain displayed in all modes while these functions are turned on.

•The alarm on indicator appears when any one of the alarms is turned on.

Countdown Timer

Auto light switch indicator

An LED (light-emitting diode) and light guide panel illuminate the digital display areas for easy reading in the dark. The watch’s auto light switch automatically illuminates the digital display areas when you angle the watch towards your face.

•The auto light switch must be turned on (indicated by the auto light switch indicator) for it to operate.

•See “Illumination Precautions” for other important information.

To turn on illumination manually

In any mode, press Lto illuminate the digital display areas.

• You can specify 1.5 seconds or 2.5 seconds as the

illumination duration. See “To set the current digital time

and date manually” for more information.

• The above operation turns on illumination regardless of

1/10 second

Mode indicator

Minutes Seconds

You can set the countdown timer within a range of one to 60 minutes. An alarm sounds when the countdown reaches zero.

•You can also select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.

•The left display window normally shows the 1/10 second count. When auto-repeat is turned on, however, it shows the current repeat count.

•All of the operations in this section are performed in the

Countdown Timer Mode, which you enter by pressing

C.

the current auto light switch setting.

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. Note that this watch features a “Full Auto Light,” so the auto light switch operates only when available light is below a certain level. It does not illuminate the digital display areas under bright light.

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 set the countdown start time

1.While the countdown start time is displayed in the bottom dial in the Countdown Timer Mode, hold down A until the current countdown start time starts to flash, which indicates the setting screen.

•If the countdown start time is not displayed, use the procedure under “To use the countdown timer” to display it.

2.Press C to toggle the flashing contents of the bottom dial between the two settings shown below.

Auto-

Minutesrepeat

3.While a setting is flashing, use D(+) and B(–) to change it.

• See “To turn auto-repeat on and off” below for details on the auto-repeat setting.

4.Press A to exit the setting screen.

Parallel to	More than
ground	40°

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 surprise 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.

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