Casio LDF-52-1AEF manual

Casio LDF-52-1AEF
  • Number of pages: 2
  • Filetype: PDF
Operation Guide 3171
About This Manual
Depending on the model of your watch, display text appears either as dark figures
on a light background or light figures on a dark background. All sample displays in
this manual are shown using dark figures on a light background.
Button operations are indicated using the letters shown in the illustration.
Timekeeping Mode
Alarm Mode
Stopwatch Mode
Dual Time Mode
Press .
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.
General Guide
Press C to change from mode to mode.
In any mode, press L to illuminate the display.
3. When the setting you want to change is flashing, press B to change it as
described below.
Pressing B 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 year can be set in the range of 2000 to 2099.
The watch’s built-in full automatic calendar 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.
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press B to toggle between 12-hour timekeeping and
24-hour timekeeping.
With the 12-hour format, the
(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, with
and indicators are not displayed with the Timekeeping Mode time on the
Alarm Mode and Dual Time Mode screens.
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
To change this setting
Hour, Minutes, Year, Month,
Day, Day of week
Perform this button operation
Press B to reset to 00.
Press B to increase the setting.
Holding down B changes the setting at high speed.
Use the Timekeeping Mode to set and view the current
time and date.
To set the time and date
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
2. Press C to move the flashing in the sequence shown
below to select other settings.
Seconds Hour
YearMonthDay of the week Day
PM indicator
Month – Day
Hour : Minutes
Day of week
Alarm time
(Hour : Minutes)
Timekeeping Mode time
(Hour : Minutes)
Mode indicator
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 that causes
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.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds,
regardless of the mode the watch is in.
Hourly time signal
on indicator
Alarm on indicator
To set an alarm time
1. In the Alarm Mode, hold down A until the hour setting
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
3. While a setting is flashing, use B to increase it.
Holding down B changes the setting at high speed.
With the 12-hour format, set the time correctly as a.m.
(no indicator) or p.m. (
4. Press A to exit the setting screen.
To stop the alarm tone after it starts to sound
Press any button.
To turn the Daily Alarm and Hourly Time Signal on and off
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
Daily alarm
Both offBoth on Hourly Time
Signal only
The alarm on ( ) indicator flashes while the alarm is
The alarm on (
) indicator and Hourly Time Signal on
) indicator are displayed in all modes.
To test the alarm
In the Alarm Mode, hold down B to sound the alarm.
Casio LDF-52-1AEF

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Casio LDF-52-1AEF specifications

Brand Casio
Model LDF-52-1AEF
Product Watch
Language English
Filetype PDF
Technical details
Mechanism type Electronic
Watch dial type -
Water resistant depth 50 m
Alarm function
LED backlight
Accuracy 20 sec/month
Clock mode 12h/24h
Watch type Bracelet watch
Watch case material Resin
Housing colour Black
Band main colour Black
Watch glass type -
Case shape Rectangular
Watch marker style Arabic numerals
Product design Sport
Band material Resin
Watch dial main colour Pink
Gender Female
Battery type CR1216
Battery life 3 year(s)
Number of batteries supported 1
Weight & dimensions
Width 23.6 mm
Depth 11.4 mm
Height 46.7 mm
Weight 25 g
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