CASIO WLS21H-1B
Owner's Manual

MA0304-A

USER�S GUIDE 2810
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to carefully read this manual and keep it on hand for later reference when necessary. Expose the watch to bright light to charge its battery before using it. You can use this watch even as its battery is being charged by exposure to bright light. � Be sure to read �Battery� of this manual for important information you need to know when exposing the watch to bright light.

About This Manual
� Button operations are indicated using the letters shown in the illustration. � Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the �Reference� section.

If the display of the watch is blank...
If the Power Saving on (P.SAVE) indicator flashes on the display, it means that the display is blank because the watch�s Power Saving function has turned off the display to conserve power. Power Saving automatically turns off the display and puts the watch into a sleep state whenever your watch is left for a certain period where it is dark. � The initial factory default setting is Power Saving on. � The watch recovers from the sleep state if you move it to a well-lit area, if you press any button, or if you angle the watch towards your face for reading. � See �Power Saving Function� for more information.

General Guide
� Press C to change from mode to mode. � In any mode, press B to illuminate the display.

� In any mode, hold down C for about two seconds to return to the Timekeeping Mode.

Timekeeping Mode

Alarm Mode

Countdown Timer Mode

Stopwatch Mode

Dual Time Mode

Press C.

Timekeeping
Month � Day Day of week

Alarms
Use the Timekeeping Mode to set and view the current time and date.
Alarm date (Month � Day)

To set the time and date 1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen. 2. Press C to move the flashing in the sequence shown below to select other settings.
PM indicator Seconds Hour : Minutes

Seconds Day

Hour Month

Minutes Year

Alarm number Alarm time (Hour : Minutes)

You can set up to five independent multi-function alarms with hour, minutes, month, and day. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms can be configured as a snooze alarm or a one-time alarm, while the other four are one-time alarms. You can also turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour. � There are five alarms numbered1 through 5. You can configure Alarm1 as a snooze alarm or a one-time alarm. Alarms 2 through 5 can be used as one-time alarms only. � You can configure alarm settings and Hourly Time Signal settings in the Alarm Mode, which you enter by pressing C.

3. When the setting you want to change is flashing, press D to change it as described below.
To change this setting Seconds Hour, Minutes, Year, Month, Day Perform this button operation Press D to reset to 00. Press D to increase the setting.

Alarm Types
The alarm type is determined by the settings you make, as described below. � Daily alarm Set the hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at the time you set. � Date alarm Set the month, day, hour and minutes for the alarm time. This type of setting causes the alarm to sound at the specific time, on the specific date you set. � 1-Month alarm Set the month, hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at time you set, only during the month you set. � Monthly alarm Set the day, hour and minutes for the alarm time. This type of setting causes the alarm to sound every month at time you set, on the day you set.

� Pressing D while the seconds are in the range of 30 to 59 resets them to 00 and adds 1 to the minutes. In the range of 00 to 29, the minutes are unchanged. 4. Press A to exit the setting screen. � The day of the week is automatically displayed in accordance with the date (year, month, and day) settings. � The year can be set in the range of 2000 to 2099. � The watch�s built-in full automatic calendar automatically 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 or when battery power drops to Level 4.

To toggle between 12-hour and 24-hour timekeeping In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24-hour timekeeping. � With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for times in the range of noon to 11:59 p.m. and no indicator appears to the left of the hour digits 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 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

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.

Press

.

� To set a one-time alarm, display one of the screens indicated by an alarm number from 2 through 5. To set the snooze alarm, display the screen indicated by1. 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 automatically turns on the alarm. 3. Press C to move the flashing in the sequence shown below to select other settings.
Hour Minutes Month Day

1