Module No. 2026
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.
Applications
The built in sensors of this watch measure altitude, barometric pressure, and
temperature. Measured values are then shown on the display. Such features
make this watch useful when hiking, mountain climbing, or when engaging in
other such outdoor activities.
• The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.
• CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,
or any claims by third parties that may arise through the use of this
watch.
Warning!
GENERAL GUIDE
• Press C to change from mode to mode.
• If the mode does not change when you press C, it may mean that Auto Display is turned on. See “Auto Display” for information about how to turn it off.
• In any mode, press L to illuminate the display.
About This Manual
A
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P
C
L
B
D
• 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.
Barometer Mode
2026-1
Timekeeping Mode
Altitude Markers
A
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P
C
B
Press B.
D
L
[ Date ] [ Temperature ]
▲
Countdown Alarm Mode
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P
Press C.
▼
▲
Altimeter Mode
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m
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P
C
P
▲
Alarm Mode
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A
P
▲
Dual Time Mode
▼
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LOCAL
P
P
HOME
2026-2
TIMEKEEPING
In addition to normal timekeeping, use the Timekeeping Mode to set the
current time and date.
Calibrating the Seconds Count
Use the following procedure to calibrate the seconds count. You can also
specify whether you prefer to use 12-hour or 24-hour timekeeping for all
screen that show times.
Time system indicator
A
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P
C
1. In the Timekeeping Mode, hold down A
until the seconds digits start to flash.
2. Press D to set the seconds count to
• Pressing D while the seconds count is in
B
the range of 30 to 59 resets the seconds to
00 and adds 1 to the minutes. If the
seconds count is in the range of 00 to 29,
the minutes count is unchanged.
• While the seconds digits are flashing, press
B to toggle between 12-hour (
D
3. Press A to return to the current time
24-hour (
screen.
24H) timekeeping.
00.
12H) and
Setting the Current Time and Date
Hour : Minutes Seconds
Day of week
A
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P
C
Month – Day
Year
PM indicator
3. While hour, minutes, year, month, or day is selected (flashing), press D to
increase the setting or B to decrease it.
4. After the time and date are set the way you want them, press A to return
to the current time screen.
Notes
• The day of the week is automatically displayed in accordance with the date
(year, month, and day) setting.
• The year can be set in the range of 1995 to 2039.
• The watch’s built-in full automatic calendar automatically make allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except after replacement of the watch’s
batteries.
1. In the Timekeeping Mode, hold down A
until the seconds digits start to flash.
• The seconds digits are flashing because
B
2. Press C to move the flashing in the
selected
they are
sequence shown below to select other
settings.
Seconds
.
Hour
D
MonthDay Year
Minutes
THERMOMETER
A built-in temperature sensor measures temperature and shows the measured
value on the display. You can calibrate the temperature sensor if you suspect
the temperature reading is incorrect.
Understanding the Temperature Screen
1. Use C to enter the Timekeeping Mode.
A
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P
C
C
Temperature
About Temperature Measurements
• When you first display the Temperature screen, it shows the current
temperature at that time. If you leave the Temperature screen on the
display, temperature measurements are taken every five seconds for the
first three minutes. After that, temperature measurements are taken every
five minutes.
• Temperature measurements are affected by your body temperature (while
you are wearing the watch), direct sunlight, and moisture. To achieve a
more accurate temperature measurement, remove the watch from your
wrist, place it in a well ventilated location out of direct sunlight, and wipe off
all moisture from the case. It takes approximately 20 to 30 minutes for the
case of the watch to reach the actual surrounding temperature.
• You can change the measured temperature value displayed by this watch
between Celsius (°C) and Fahrenheit (°F). See “Changing the Temperature
Units” .
2. Press B to display the Temperature
B
screen.
• Temperature is displayed in units of 0.1°C
(or 0.2°F).
• The displayed temperature value changes to
xx.x °C (or ° F) if a measured temperature
falls outside the range of –10.0°C to 60.0°C
D
(14.0°F to 140.0°F). The temperature value
will be displayed again as soon as the
measured temperature is within the
allowable range.
BAROMETER
This watch uses a pressure sensor to measure air pressure. You can calibrate
the pressure sensor if you suspect the barometric pressure reading is
incorrect.
Applications
• Before going mountain climbing, you can take readings to find out the
probable upcoming weather.
• You can predict the weather for golf or other outdoor activities.
Important!
• The pressure sensor built into this watch measures changes in air pressure,
which you can then apply to your own weather predictions. It is not intended
for use as a precision instrument in official weather prediction or reporting
applications.
• The barometric pressures that you see in the newspaper and on the TV
weather report are measurements corrected to values measured at 0m sea
level.
Understanding the Barometer Screen
Barometric pressure graph
Weather graphic
A
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hPa mb
P
C
Current time
Barometic pressure
Weather Graphic and Pressure Tendency Indicator
The watch automatically takes a barometric pressure reading every two hours.
It compares the current reading with the last one. If the difference is greater
than ±2hPa/mb (0.05inHg), the graphic and tendency indicator are changed
accordingly.
Weather
Graphic
Tendency
Indicator
• If the difference between two readings is less than ±2hPa/mb (0.05inHg) or
if the watch was unable to make a successful reading for some reason, the
graphic remains the same and the tendency indicator shows
• The “Improving” graphic and rising tendency indicator are shown
immediately after replacement of the watch batteries.
Barometric pressure graph
Barometric pressure indicates changes in the atmosphere. By monitoring
these changes you can predict the weather with reasonable accuracy.
The barometric pressure graph shows the barometric readings for the past 20
hours. The flashing point on the right of the display is the point for the last
measurement. The following shows how to interpret the data that appears on
the barometric pressure graph.
A rising graph generally means improving weather.
A falling graph generally means deteriorating weather.
Note that if there are sudden changes in weather or
temperature, the graph line of past measurements
may run off the top or bottom of the display. The entire
graph will become visible once barometric conditions
stabilize.
The following conditions cause the barometric
pressure measurement to be skipped, with the
corresponding point on the barometric pressure graph
being left blank.
• Barometric reading that is out of range (460hPa/mb to 1100hPa/mb or
13.55inHg to 32.45inHg)
• Sensor malfunction
• Dead batteries
Use C to enter the Barometer Mode.
• Barometric pressure is displayed in units of
Pressure
tendency
indicator
1hPa/mb (or 0.05inchesHg).
• The displayed barometric pressure value
changes to
measured barometric pressure falls outside
the range of 460hPa/mb to 1100hPa/mb
B
(13.55inHg to 32.45inHg). The barometric
pressure value will be displayed again as
soon as the measured barometric pressure
is within the allowable range.
• In the Barometer Mode, the top part of the
display alternates between a barometric
D
pressure graph and a weather graphic. A
pressure tendency indicator is also shown
on the display.
xxxx hPa/mb (or inHg) if a
No ChangeImproving
Deteriorating
.
Not visible on
the display.