Casio 2621 World Time, Countdown Timer, City Temperature, Stopwatch, Alarm, Alarm Operation

USER’S GUIDE 2621

World Time

Countdown Timer

Current time in the zone of the selected city code

City code

Current day of week in the zone of the selected city code

World Time shows the current time in 30 cities (27 time zones) around the world.

∑All of the operations in this section are performed in the World Time Mode, which you enter by pressing C.

To view the time in another city code

In the World Time Mode, press D to scroll through city codes (time zones) to the east or B 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.

You can set the countdown timer within a range of

Hours	Minutes	one minute to 24 hours. 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.
		∑ Countdown timer functions are available in the
		Countdown Timer Mode, which you can enter using C.

Seconds

To use the countdown timer

Press D while in the Countdown Timer Mode to start the countdown timer.

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

1. In the World Time Mode, use B and 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 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.

City Temperature

∑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.

∑When the end of the countdown is reached and auto-repeat is turned on, the alarm sounds, but the countdown starts again automatically whenever the countdown reaches zero.

∑The countdown timer measurement operation continues even if you exit the Countdown Timer Mode.

∑Press D while a countdown operation is in progress to pause it. Press D again 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 set up the countdown timer

1. While the countdown start time is on the display in the Countdown Timer Mode, hold down A until the hour setting of the countdown start time starts to flash, which

Average high temperature

Average low temperature

Month City code

In the City Temperature Mode, the display shows the average high and low monthly temperatures in 30 cities around the globe.

Note

∑Displayed temperatures are monthly averages. They do not ensure that the temperature on any particular date will fall within the indicated range.

∑The average high temperature and low temperature values alternate on the display at two-second intervals.

∑The screen that appears first is the one for the city and month that was on the display when you last exited the City Temperature Mode.

∑All of the operations in this section are performed in the City Temperature Mode, which you enter by pressing

C.

indicates the setting screen.

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

2. Press C to move the flashing in the sequence shown

	below to select other settings.
	Hours	Minutes		Auto-repeat
3. While a setting is flashing, use D and B to change it as described below.
Screen	To do this:		Do this:
0:00	Change the hours or minutes		Use D (+) and B (–).
OFF	Toggle auto-repeat on (ON) and off (OFF)		Press D.

∑ To specify a countdown start time of 24 hours, set 0:00.

To view city temperature data

1.In the City Temperature Mode, press D to scroll through city codes (time zones) to the east or B to scroll to the west.

2.Press A to display the data for the following month.

∑For full information about city code, see the “City Code Table”.

4. Press A to exit the setting screen.

∑The auto-repeat on indicator () appears on the display while this function is turned on.

∑Frequent use of auto-repeat and the alarm can run down battery power.

Stopwatch

To specify the temperature unit

While in the City Temperature Mode, press B and D at the same time to toggle between Celsius (∞C) and Fahrenheit (∞F).

Alarm

Minutes Seconds

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

∑ The display range of the stopwatch is 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

Alarm time (Hour : Minutes)

When the daily alarm is turned on, the alarm tone sounds when the alarm time is reached.

You can also turn on an Hourly Time Signal (:00) that causes the watch to beep twice every hour on the hour.

∑Alarm setting (and Hourly Time Signal setting) is available in the Alarm Mode, which you enter by pressing C.

1/100 second

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.

To set an 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 automatically turns on the alarm.

2.Press C to move the flashing between the hour and minutes.

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

To measure times with the stopwatchElapsed Time

Start	Stop	Re-start	Stop	Clear
Split Time
Start	Split	Split release	Stop	Clear
	(	displayed)
Two Finishes
Start	Split	Stop	Split release	Clear

∑ With the 12-hour format, set the time correctly as a.m. (A indicator) or p.m. (P indicator).

4.Press A to exit the setting screen.

Alarm Operation

The alarm tone sounds at the preset time for 20 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 Hourly Time Signal on and off

First runner	Second runner	Display time of
finishes.	finishes.	second runner.
Display time of
first runner.

∑The time on the screen may not appear to stop immediately when you press a button to stop timing or to perform a split operation. Despite this, the time recorded by your button operation is accurate.

Alarm on	Hourly Time
indicator	Signal on
	indicator

In the Alarm Mode, press B to cycle through the on and off settings as shown below.

Alarm On Indicator/Hourly Time Signal On Indicator

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

∑The alarm on indicator flashes while the alarm is sounding.

∑The alarm on indicator and Hourly Time Signal on indicator are displayed in all modes.

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