Casio B640WB-1AEF manual

Casio B640WB-1AEF
8.4 · 4
PDF manual
 · 3 pages
English
manualCasio B640WB-1AEF

Operation Guide 3294

E-19
To set the countdown start time
In the Countdown Timer Mode, press 1. A. The hours digits of the countdown start
time will start to fl ash, which indicates the setting screen.
Press 2. C to move the fl ashing in the sequence shown below to select other
settings.
Hours Minutes Seconds
CC
C
While a setting is fl ashing, press 3. D to increase it.
To set the starting value of the countdown time to 24 hours, set x 0:00' 00.
Press 4. A to exit the setting screen.
E-18

Countdown Timer

The countdown timer can be set within a range of 1 second
to 24 hours. When the countdown reaches zero, an alarm
sounds for 10 seconds or until you press any button.
You can also select auto-repeat, which automatically
x
restarts the countdown from the original value you set
whenever zero is reached.
Countdown timer functions are available in the
x
Countdown Timer Mode, which you enter by pressing
C (page E-7).
Hours
Minutes
Seconds
Mode indicator
Current time
E-17
To switch an alarm and Hourly Time Signal on and off
Press D while in the Alarm Mode to change the status of
an alarm and Hourly Time Signal in the sequence shown
below.
Both off
Hourly Time Signal onlyBoth on
D
D
D
Alarm only
D
x The alarm on indicator and the Hourly Time Signal on
indicator are shown on the display in all modes while
these functions are turned on.
Hourly Time Signal
on indicator
Alarm on indicator
E-16
To set an alarm that does not include a day (Daily alarm, 1-Month alarm), set x
for the day. Press D until the
mark appears (between the end of the month
and
) while the day setting is fl ashing.
When setting the alarm time using the 12-hour format, take care to set the time x
correctly as a.m. or p.m. (PM indicator).
Press 4. A to exit the setting screen.
To stop the alarm
Press any button to stop the alarm after it starts to sound.
E-15
To set the alarm time
In the Alarm Mode, press 1. A. The hour digits of the alarm time will start to fl ash,
which indicates the setting screen.
x This operation automatically turns on the alarm.
Press 2. C to move the fl ashing in the sequence shown below to select other
settings.
Hour Minutes Month Day
CC
C
C
While a setting is fl ashing, press 3. D to increase it.
To set an alarm that does not include a month (Daily alarm, Monthly alarm), set x
for the month. Press D until the mark appears (between and ) while
month setting is fl ashing.
E-14

Alarm Types

The alarm type is determined by the settings you make, as described below.
Daily alarm
x
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
x
Set the month, day, hour and minutes for the alarm time. This type of setting causes
the alarm to sound at the specifi c time, on the specifi c date you set.
1-Month alarm
x
Set the month, hour and minutes for the alarm time. This type of setting causes the
alarm to sound everyday at the time you set, only during the month you set.
Monthly alarm
x
Set the day, hour and minutes for the alarm time. This type of setting causes the
alarm to sound every month at the time you set, on the day you set.
E-13

Alarm

The multi-function alarm lets you specify the hour,
minutes, month, and day for the alarm (page E-14). When
the alarm is on, the alarm sounds for 20 seconds at the
preset time. When the Hourly Time Signal is on, the
watch beeps every hour on the hour.
The alarm and the Hourly Time Signal sound in all
x
modes.
An alarm setting (and an Hourly Time Signal setting) x
is available in the Alarm Mode, which you enter by
pressing C (page E-6).
Hourly Time Signal
on indicator
Alarm on indicator
Mode indicator
Month
Hour
Minutes
Day
E-12

Backlight Precautions

The backlight uses an LED (light-emitting diode) and a light guide panel that cause
the entire display to glow for easy reading in the dark.
In any mode, press B to illuminate the display for about two seconds.
x The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
x The backlight automatically stops illuminating whenever an alarm sounds.
x Frequent use of the backlight shortens the battery life.
E-11

Backlight

When you switch the backlight function on, the backlight of the watch fl ashes
whenever Alarm, Hourly Time Signal or Countdown Timer is sounding.
x Pressing B at any time illuminates the display, regardless of the backlight’s
on/off setting.
To switch the backlight function on and off
In the Timekeeping Mode, hold down D for about two
seconds to switch the backlight function on and off. When
you switch the backlight function on, an indicator appears
on the display as shown.
x The backlight function on indicator remains on the
display in all modes until you switch the backlight
function off.
x The above operation controls operation of the backlight
function only. It does not affect operation of audible
tones and signals.
Backlight function on
indicator
E-10
x 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.
With the 12-hour format, the
x PM indicator appears 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 the 24-hour format, times are displayed in the range of 0:00 to 23:59, with
x
the 24H indicator.
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is x
applied in all other modes.

Manual

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Casio B640WB-1AEF specifications

Below you will find the product specifications and the manual specifications of the Casio B640WB-1AEF.

General
Brand Casio
Model B640WB-1AEF | B640WB-1AEF
Product Watch
Language English
Filetype Usermanual (PDF)
Technical details
Mechanism type Electronic
Watch dial type -
Waterproof
Water resistant depth 50 m
Shockproof
Chronograph
Stopwatch
Timer 1/1s - 24h
Alarm function
Calendar
LED backlight
Accuracy 30 sec/month
Snooze function
Clock mode 12h/24h
Watch type Bracelet watch
Design
Watch case material Resin
Housing colour Black
Band material Stainless steel
Band main colour Black
Watch glass type -
Case shape -
Watch dial main colour Grey
Watch marker style Arabic numerals
Product design Sport
Power
Battery type CR2016
Battery life 3 year(s)
Number of batteries supported 1
Weight & dimensions
Width 35 mm
Depth 38.9 mm
Height 9.4 mm
Weight 44 g
Other features
Dimensions (WxDxH) 35 x 38.9 x 9.4 mm
Product colour Black
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