Casio G-Shock BG2101-7 User manual

1
Operation Guide 3096
MA0707-EA
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.
•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.
Timekeeping Mode Countdown Timer Mode Dual Time ModeAlarm ModeStopwatch Mode
Press .
General Guide
•Press Cto change from mode to mode.
•In any mode, press Bto illuminate the display for about one second.
Hour : Minutes
PM indicator
Seconds
Month, Day
Day of week
Hold
down .
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date. While Active Display is turned on, the
watch maintains a count that is incremented each time
you angle it towards your face for viewing, or when you
otherwise move your arm. The watch changes the
Timekeeping Mode current time display to one of six
different styles automatically in accordance with the value
of the count.
•Regardless of whether Active Display is turned on or off,
tilting the watch towards your face for viewing will cause
the display figures change size, rotate, or otherwise
change dynamically for approximately one second. The
way the display figures changes depends on the
currently selected display style.
•For more information about Active Display, see “Active
Display”.
•Holding down Din the Timekeeping Mode will display the current month, day, and
day of the week. The current time will return to the display about one second after
you release D.
Time Display Formats
Your watch can display the current time using any one of the following display formats.
12 - 11: This 12-hour format does not distinguish between noon and midnight, which
are both displayed as 12:00.
0 - 11: This 12-hour format does not distinguish between noon and midnight, which
are both displayed as 0:00.
0 - 23: This 24-hour format distinguishes between noon (12:00) and midnight (0:00).
6 - 29: This 24-hour format uses a day that starts at 6:00 a.m. and ends at 5:59 a.m.
The date changes at 6:00 a.m.
•For information about setting the time, see “To set the time and date”.
•With a 12-hour format, the PM indicator appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
•With a 24-hour format, times are displayed without any indicator.
Screen To do this:
Reset the seconds to 00
Change the hour or minutes
Select the time format :
12-11,0-23,6-29,or 0-11
Change the year
Change the month or day
Turn Active Display on (on) and
off (OF)
Do this:
Press D.
Use D(+) and B(–).
Press D.
Use D(+) and B(–).
Press D.
•The time format you select for the Timekeeping Mode also is applied in the Alarm
Mode and Dual Time Mode.
To set the time and date
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Press Cto move the flashing in the sequence shown
below to select other settings.
Seconds Hour Minutes
Time format
Year
Active Display on/off
Day Month
Seconds
3. When the setting you want to change is flashing, use Dand Bto change it as
described below.
•For more information about Active Display, see “Active Display”.
4. Press Ato exit the setting screen.
•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 displayed automatically 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.
Active Display
While Active Display is turned on, the watch will display the Timekeeping Mode
current time using one of six different display styles. The style will be selected in
accordance with the value of a count the watch increments each time you angle the
watch towards your face or otherwise move your arm.
•While Active Display is turned on, a dancer animation
will appear at random intervals in the upper half of the
display. The dancer animation also will appear
whenever you change from one mode to another,
regardless of whether Active Display is on or off.
•While Active Display is turned off, you can select from among Style 1 through Style
5 as the Timekeeping Mode current time display style.
•Regardless of whether Active Display is turned on or off, tilting the watch towards
your face for viewing will cause the display figures change size, rotate, or otherwise
change dynamically for approximately one second. The way the display figures
changes depends on the currently selected display style.
•The following shows the six Timekeeping Mode current time display styles, which
are numbered from Style 1 to Style 6.
Style 1 Style 2 Style 3
Style 4 Style 5 Style 6*
Secret!
MinutesHour
Seconds
PM indicator
Hour : Minutes
* Style 6 appears only while Active Display is turned on. You cannot select Style 6
while Active Display is turned off.
•You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This is the sound of the Active Display movement sensing
mechanism, and does not indicate malfunction of the watch.
To turn Active Display on and off
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Press Cseven times to display the Active Display
on/off screen.
3. Press Dto toggle Active Display on (on) and off (OF).
4. Press Ato exit the setting screen.
•The Active Display on indicator (ACT ON) is on the
display while Active Display is turned on.
•Displaying the setting screen while Style 6 is displayed
and turning off Active Display will change the display
style to Style 2 automatically.
Dancer Animation
Active Display on
indicator

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Operation Guide 3096
Mode indicator
Minutes
To select a timekeeping display style
1. In the Timekeeping Mode, hold down Auntil the seconds start to flash. This is the
setting screen.
2. Press Cseven times to display the Active Display on/off screen.
3. Use Dto turn off (OF) Active Display.
•You cannot select the timekeeping display style while Active Display is turned on.
4. Press Ato exit the setting screen.
5. In the Timekeeping Mode, press Ato cycle through the available timekeeping
display styles (Style 1 through Style 5), until the one you want is displayed.
•Displaying the setting screen while Style 6 is displayed and turning off Active Display
will change the display style to Style 2 automatically.
Countdown Timer
The countdown timer can be set within a range of one to
60 minutes. An alarm will sound when the countdown
reaches zero.
•The initial factory default setting is one minute (01min).
•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 set the countdown start time
In the Countdown Timer Mode, press Ato increase the countdown start time
(minutes).
•You can set the countdown start time within the range of one minute (01min) to 60
minutes (60min), in one-minute increments.
•Holding down Awill increase the countdown start time at high speed.
To perform a countdown timer operation
In the Countdown Timer Mode, press Dto start the countdown.
•When the countdown reaches zero, the alarm tone will sound for 10 seconds or until
you stop it by pressing any button. The countdown time will reset automatically to its
starting value after the alarm stops.
•In addition to the alarm tone, a Flash Alert operation will be performed when the
countdown reaches zero. The Flash Alert operation will continue for 10 seconds or
until you stop it by pressing any button.
•Press Dwhile a countdown operation is in progress to pause it. Press Dagain to
resume the countdown.
•To completely stop a countdown operation, first pause it (by pressing D), and then
press A. This will return the countdown time to its starting value.
•The remaining minutes and seconds are counted down on the display until the final
minute of the countdown. Only the seconds are displayed during the final minute.
Screen when stopwatch elapsed time operation
is stopped at 40 minutes, 01.45 seconds
Stopwatch
The stopwatch measures elapsed time.
•The display range of the stopwatch is 59 minutes, 59.99 seconds.
•Elapsed time operations are performed internally at units of 1/100-second. When
you stop an elapsed time operation, the 1/100-second value will appear on the
display.
Mode indicator
Seconds
1/100 second
SecondsMinutes
Mode indicator
Alarm time
(Hour : Minutes)
•Only the seconds are displayed during the first 59 seconds of an elapsed time
operation. After that, both the minutes and seconds are displayed.
•The stopwatch continues to run, restarting from zero after it reaches its limit, until
you stop it.
•The stopwatch measurement operation continues even if you exit the Stopwatch
Mode.
•All of the operations in this section are performed in the Stopwatch Mode, which you
enter by pressing C.
To measure elapsed time with the stopwatch
Elapsed Time
Start Stop Re-start Stop Clear
Alarm
When the daily alarm is turned on, the alarm tone will
sound when the alarm time is reached.
•All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Alarm Operation
The alarm tone will sound at the preset time for
10 seconds, regardless of the mode the watch is in.
•Alarm operations are performed in accordance with the
Timekeeping Mode time.
•To stop the alarm tone after it starts to sound, press any
button.
•In addition to the alarm tone, a Flash Alert operation will
be performed whenever the alarm time is reached. The
Flash Alert operation will continue for
10 seconds or until you stop it by pressing any button.
Alarm on indicator
To set an alarm time
1. In the Alarm Mode, hold down Auntil the hour setting
of the alarm time starts to flash, which indicates the
setting screen.
•This will turn on the alarm automatically.
2. Press Cto move the flashing between the hour and
minutes.
3. While a setting is flashing, use D(+) and B(–) to
change it.
4. Press Ato exit the setting screen.
•With the 12-hour format, set the time correctly as a.m.
(no indicator) or p.m. (PM indicator).
To turn an alarm on and off
In the Alarm Mode, press Dto toggle it on (ALM displayed) and off (ALM not
displayed).
•The alarm on indicator (ALM) flashes while the alarm is sounding.
•The alarm on indicator (ALM) is displayed in all modes.
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
Mode indicator
PM indicator
Dual time
(Hour : Minutes)
Dual Time
The Dual Time Mode lets you keep track of time in a
different time zone.
•In the Dual Time Mode, the seconds count is
synchronized with the seconds count of the
Timekeeping Mode.
To set the Dual Time
1. Press Cto enter the Dual Time Mode.
2. In the Dual Time Mode, hold down Auntil the hour
setting starts to flash, which indicates the setting
screen.
3. Press Cto move the flashing between the hour and
minutes.
4. While a setting is flashing, use D(+) and B(–) to
change it.
5. Press Ato exit the setting screen.
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.
Auto Display
Auto Display cycles automatically through the screens of
each mode.
To turn off Auto Display
Press any button except for B(which will illuminate the
display).
To turn on Auto Display
In the Timekeeping Mode, hold down Band Dfor about
two seconds.
•Note that Auto Display cannot be turned on while a
setting screen is on the display.
Flash Alert
There are four LEDs located around the periphery of the
watch’s display. Two are used for display illumination and
Flash Alert (display illumination), and two are used for
Flash Alert only (alert illumination). While Flash Alert is
turned on, a 10-second Flash Alert operation (5-second
flashing display illumination followed by 5-second flashing
alert illumination) will be performed whenever an alarm
time is reached or when a countdown reaches zero. This
helps to alert you even in areas where surrounding noise
is too loud to hear the alarm tone.
•You can stop the Flash Alert operation and the alarm
tone by pressing any button.
•Note that Flash Alert is always enabled. You cannot turn
it off.
•Alert illumination also flashes for one second whenever
the timekeeping display style is changed by Active
Display.
To test alert illumination
In the Timekeeping Mode, hold down Bfor about three seconds. This will cause alert
illumination to flash for about 10 seconds.
Button Operation Tone
The button operation tone will sound any time you press
one of the watch’s buttons. You can turn the button
operation tone on or off as desired.
•The daily alarm and countdown alarm tones continue to
sound even if you turn off the button operation tone.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the
display), hold down Cto toggle the button operation tone
on (mute indicator not displayed) and off (mute indicator
displayed).
•Holding down Cto turn the button operation tone on or off also causes the watch’s
current mode to change.
•The mute indicator is displayed in all modes when the button operation tone is
turned off.
Mute indicator
LED
(Alert illumination)
LED
(Display illumination)

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Operation Guide 3096
Illumination
Your watch uses two LEDs to illuminate the display for easy reading in the dark. In
any mode (except when the setting screen is on the display), press Bto turn on
illumination for about one second.
•About one second after it lights, display illumination will flash for about a half
second. After that, alert illumination will flash for about a half second.
Illumination Precautions
•Illumination may be hard to see when viewed under direct sunlight.
•Illumination turns off automatically whenever an alarm sounds.
•Frequent use of illumination runs down the battery.
Auto Return Feature
•If you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it will change to the Timekeeping Mode automatically.
•If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch will exit the setting screen
automatically.
Scrolling
The A, 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 will scroll at high speed.