CASIO BG1220-4A
Owner's Manual

Operation Guide 3006
To measure times with the stopwatch
Elapsed Time Start Split Time Start Two Finishes Start Split
First runner finishes. Display time of first runner.

Stop

Re-start

Stop

Clear

Split
( displayed)

Split release

Stop

Clear

Stop
Second runner finishes.

Split release
Display time of second runner.

Clear

To turn an alarm on and off 1. In the Alarm Mode, use D to select an alarm. Snooze alarm indicator 2. Press A to toggle it on ( displayed) and off ( displayed). � Turning on a one-time alarm ( through ) displays the alarm on indicator on its Alarm Mode screen. � Turning on the snooze alarm ( ) displays the alarm on indicator and snooze alarm indicator on the Alarm Mode snooze alarm screen. � In all modes, the alarm on indicator is shown for any alarm that is currently turned on. On/Off status � The alarm on indicator flashes while the alarm is Alarm on indicator sounding.
� The snooze alarm indicator flashes during the 5-minute intervals between alarms.

Countdown Timer
Hours Minutes

The countdown timer can be set within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero. � The countdown operation continues even if you exit the Countdown Timer Mode. � All of the operations in this section are performed in the Countdown Timer Mode, which you enter by pressing C.

To turn the Hourly Time Signal on and off 1. In the Alarm Mode, use D to select the Hourly Time Signal ( ). 2. Press A to toggle it on ( displayed) and off ( displayed). � The Hourly Time Signal on indicator is shown on the display in all modes while the Hourly Time Signal is turned on.
On/Off status Hourly time signal on indicator

Seconds

To use the countdown timer Press D while 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 automatically reset to its starting value after the alarm stops.

Illumination
This watch has an EL (electro-luminescent) panel that causes the entire display to glow for easy reading in the dark.

� 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 A. This returns the countdown time to its starting value.

Illumination Precautions

To set the countdown start time 1. In the Countdown Timer Mode, hold down A until the hours of the countdown start time start to flash, which indicates the setting screen. 2. Press C to move the flashing between the hours and minutes. 3. While a setting is flashing, use D (+) or B (�) to change it. � To set the starting value of the countdown time to 24 hours, set . 4. Press A to exit the setting screen.

� 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 runs down the battery.

Alarms
Alarm number

To illuminate the display In any mode (except when a setting screen is on the display), press B to turn on illumination. � You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press B, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current setting. To specify the illumination duration 1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen. 2. While the seconds are flashing, press B to toggle the illumination duration between 1.5 seconds ( ) and 3 seconds ( ). 3. Press A to exit the setting screen.

On/Off status Alarm time (Hour : Minutes)

You can set five independent Daily Alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms is a snooze alarm, while the other four are one-time alarms. You can turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour. � There are six screens in the Alarm Mode. Four are for one-time alarms (indicated by numbers from through ), one is for a snooze alarm (indicated by ), and one is for the Hourly Time Signal (indicated by ). � All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

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.

To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.

Button Operation Tone
The button operation tone sounds any time you press one of the watch�s buttons. You can turn the button operation tone on or off as desired. � Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Countdown Timer Mode alarm all operate normally.

� To set a one-time alarm, display one of the screens indicated by an alarm number from through . To set the snooze alarm, display the screen indicated by . � The snooze alarm repeats every five minutes. 2. After you select an alarm, 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. 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. ( indicator) or p.m. ( indicator). 5. Press A to exit the setting screen.

To turn the button operation tone on and off In any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on ( not displayed) and off ( displayed).
� Holding down C to turn the button operation tone on or off also causes the watch�s current mode to change. � The indicator is displayed in all modes when the button operation tone is turned off.

Auto Return Features
� If you leave the watch in the Alarm Mode for two or three minutes without performing any operation, it automatically changes to the Timekeeping Mode. � If you leave a screen with flashing digits or a cursor on the display for two or three minutes without performing any operation, the watch automatically saves any settings you have made up to that point and exits the setting screen.

Alarm Operation
The alarm sounds at the preset time for about 10 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, or until you turn the alarm off. � To stop the alarm tone after it starts to sound, press any button. � Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation. Displaying the Timekeeping Mode setting screen Displaying the setting screen

Scrolling
The B and D 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 at high speed.

To test the alarm In the Alarm Mode, hold down D to sound the alarm.

Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

2