Casio 5679 User manual

© 2021 CASIO COMPUTER CO., LTD.
MA2111-A
User’s Guide
Watch
5679 EN

Congratulations upon your selection of this CASIO watch.
To ensure that this watch provides you with the years of service for which it is
designed, carefully read and follow the instructions in this manual, especially the
information under “Operating Precautions” and “User Maintenance”.

EN-1
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.
•Note that the product illustrations in this manual are
intended for reference only, and so the actual product
may appear somewhat different than depicted by an
illustration.

EN-2
Contents
About This Manual.............................................................................................. EN-1
Watch Features................................................................................................... EN-5
Selecting a Mode................................................................................................ EN-6
Timekeeping...................................................................................................... EN-10
To set the digital time and date......................................................................EN-11
To toggle between 12-hour and 24-hour timekeeping ..................................EN-14
To toggle the Timekeeping Mode digital time between
DST and Standard Time .............................................................................EN-15
To adjust the analog time...............................................................................EN-16
Telememo.......................................................................................................... EN-17
To create a new Telememo record ................................................................EN-18
To recall Telememo records ..........................................................................EN-22
To edit a Telememo record............................................................................EN-23

EN-3
To delete a Telememo record........................................................................EN-23
World Time ........................................................................................................ EN-25
To set the World Time....................................................................................EN-26
To view the time in another city code ............................................................EN-27
To toggle a city code time between
Standard Time and Daylight Saving Time ..................................................EN-28
Alarm.................................................................................................................. EN-29
To set an alarm time.......................................................................................EN-30
To test the alarm ............................................................................................EN-32
To turn an alarm and the Hourly Time Signal on and off................................EN-32
Timer.................................................................................................................. EN-34
To set the countdown start time ....................................................................EN-34
To use the timer .............................................................................................EN-35
Stopwatch ......................................................................................................... EN-36
To measure times with the stopwatch ...........................................................EN-37

EN-4
Specifications ................................................................................................... EN-38
Operating Precautions ..................................................................................... EN-40
User Maintenance ............................................................................................ EN-51

EN-5
Watch Features
◆Telememo
Telememo lets you store up to 30 records, each containing name and telephone
number data.
◆World Time
Display the current time in any one of 32 cities (29 time zones) around the globe.
◆Alarm
◆Timer
◆Stopwatch

EN-6
Selecting a Mode
•Press Cto change from mode to mode. After you perform an operation in any
mode, pressing Creturns to the Timekeeping Mode.
C C
Timekeeping Mode World Time ModeTelememo Mode
C

EN-7
Alarm Mode
Timer ModeStopwatch Mode
C
C
Hand Setting Mode
C
C

EN-8
Auto Return Feature
•The watch automatically returns to the Timekeeping Mode if you do not perform
any button operation for two or three minutes in the Telememo, Alarm, or Hand
Setting 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 exits the setting
screen.
•Holding down Cfor about one second in any mode jumps directly to the
Timekeeping Mode. This operation does not work while a setting screen is on the
display.
Scrolling
•The Band Dbuttons 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 through the data at high speed.

EN-9
Initial Screens
•When you enter the Telememo, World Time, or Alarm Mode, the data you were
viewing when you last exited the mode appears first.

EN-10
Timekeeping
This watch features separate digital and analog timekeeping. The procedures for
setting the digital time (page EN-11) and analog time (page EN-15) are different.
•In the Timekeeping Mode, press Ato toggle the display between the date screen
and the time screen.
Date Screen Time Screen
A
Month – Day Day of week Hour : Minute
Minute PM indicator SecondHour

EN-11
Digital Time and Date
Use the Timekeeping Mode to set and view a digital display of the current time and
date. When setting the digital time, you can also configure settings for summer time
(Daylight Saving time or DST).
To set the digital time and date
1. In the Timekeeping Mode, hold down Auntil the
second start to flash, which indicates the setting screen.
2. Press Cto move the flashing in the sequence shown
below to select the other settings.
CCC
CCC
C
Second DST
Day
Hour
Month
Minute
Year

EN-12
3. When the setting you want to change is flashing, use Band Dto change it as
described below.
Screen To do this: Do this:
Reset the second to 00 Press D.
Toggle between Daylight Saving Time (ON)
and Standard Time (OFF)Press D.
Change the hour or minute
Use B(–) and D(+).
Change the year
Change the month or day

EN-13
4. Press Ato exit the setting screen.
•Resetting the seconds only (without changing the hour, minute, or DST setting)
causes the analog minute hand setting to be adjusted automatically. If you
change the hour, minute, or DST setting, you should also use the procedure
under “To adjust the analog time” (page EN-16) to adjust the analog hands
accordingly.
•See “Digital Time Daylight Saving Time (DST) Setting” (page EN-14) for details
about the DST setting.
•Resetting the seconds to 00 while the current count is in the range of 30 to
59causes the minutes to be increased by 1. In the range of 00 to 29, the
seconds are reset to 00 without changing the minutes.
•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 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.

EN-14
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press Dto toggle between 12-hour timekeeping
(indicated by Aor Pon the display), or 24-hour timekeeping.
•With the 12-hour format, the P(PM) indicator appears on the display for times in
the range of noon to 11:59 p.m. and the A(AM) indicator appears 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 modes.
Digital Time Daylight Saving Time (DST) Setting
Daylight Saving Time (summer time) advances the digital time setting by one hour
from Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.

EN-15
To toggle the Timekeeping Mode digital time between DST and Standard Time
1. In the Timekeeping Mode, hold down Auntil the
second start to flash, which indicates the setting screen.
2. Press Conce to display the DST setting screen.
3. Press Dto toggle between Daylight Saving Time
(ONdisplayed) and Standard Time (OFF displayed).
4. Press Ato exit the setting screen.
•The DST indicator appears on the Timekeeping,
Alarm, and Hand Setting Mode to indicate that
Daylight Saving Time is turned on.
Setting the Analog Time
Perform the procedure below when the time indicated by the analog hands does not
match the time of the digital display.

EN-16
To adjust the analog time
1. In the Timekeeping Mode, press Csix times to enter
the Hand Setting Mode (page EN-7).
2. Hold down Auntil the current digital time starts to
flash, which indicates the analog setting screen.
3. Press Dto advance the analog time setting by
20seconds.
•Holding down Dadvances the analog time setting
at high speed.
•If you need to advance the analog time a long way, press Band Dat the
same time. This locks the high speed hand movement, so you can release the
two buttons. High-speed hand movement continues until you press any button.
It will also stop automatically after the time advances 12hours or if an alarm
(daily alarm, Hourly Time Signal, or countdown alarm) starts to sound.
4. Press Ato exit the setting screen.
•To return to the Timekeeping Mode, press C.

EN-17
Telememo
Telememo lets you store up to 30records, each
containing name and telephone number data. Records
are automatically sorted based on the characters of the
name. You can recall records by scrolling through them
on the display.
•A Telememo Mode record has a name field and a
number field.
•See “Character List” at the back of this manual for
details on how the watch sorts records.
•All of the operations in this section are performed in
the Telememo Mode, which you enter by pressing C
(page EN-6).
Remaining memory
Record number
Number
Name

EN-18
To create a new Telememo record
1. In the Telememo Mode, press Band Dat the same
time to display the new data screen.
•The new data screen shows ———, which indicates
that there is no text in the name field.
•If the new data screen does not appear, it means that
memory is full. To store another record, you will first
have to delete some of the records stored in memory.
2. Hold down Auntil the flashing cursor (—) appears in
the name field of the display, which indicates the setting
screen.
3. Use Band Dto change the character at the cursor
position in the name field. The character changes in the
following sequence.
New Data Screen