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E-1

ENGLISH

Congratulations upon your selection of this CASIO watch.

Operation Guide 3261 3281

MO1104-EA

E-2

Warning !

 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.

 The Moon phase indicator that appears on the display of this watch is not 

intended for navigation purposes. Always use proper instruments and 
resources to obtain data for navigation purposes.

 When engaging in mountain climbing or other activities in which losing your 

way can create a dangerous or life-threatening situation, always use a second 
compass to confirm direction readings.

 Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any 

damage or loss suffered by you or any third party arising through the use of 
this product or its malfunction.

E-3

About This Manual

 Depending on the model of your watch, display text appears either as dark figures 

on a light background (Module 3261), or light figures on a dark background 
(Module 3281). All of the illustrations in this manual show Module 3261.

 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.

Module 3261

Module 3281

E-4

Things to check before using the watch

1. Check the battery power level.

Is “

H

” or “

M

” displayed for the battery power indicator 

(page E-14)?

Go to step 2.

Power is low.

 Charge the watch by placing it in a 

location where it is exposed to light. For details, 
see “Charging the Watch” (page E-12).

NO

YES

YES

Does any one of the following conditions exist?

 Battery power indicator shows “

L

” and “

LOW

” is 

displayed in the upper right corner of the screen.

 “

CHG

” is displayed in the upper right corner of the screen.

 The face is blank.

The watch is charged 
sufficiently.
For details about 
charging, see 
“Charging the Watch” 
(page E-12).

NEXT

Battery power 
indicator

E-5

2. Check the Home City and the daylight saving time (DST) setting.

Use the procedure under “To configure Home City settings” (page E-26) to configure 
your Home City and daylight saving time settings.

Important!

World Time Mode data depend on correct Home City, time, and date settings in the 
Timekeeping Mode. Make sure you configure these settings correctly.

3. Set the current time.

 To set the time manually

  See “Configuring Current Time and Date Settings” (page E-29).

The watch is now ready for use.

E-6

Contents

E-3 About 

This 

Manual

E-4 

Things to check before using the watch

E-12 Charging 

the 

Watch

E-19 

To recover from the sleep state

E-20 

To turn Power Saving on and off

E-21 Mode 

Reference 

Guide

E-25 Timekeeping

E-26  Configuring Home City Settings

E-26 

To configure Home City settings

E-28 

To change the Daylight Saving Time (summer time) setting

E-7

E-29  Configuring Current Time and Date Settings

E-29 

To change the current time and date settings

E-33 Digital 

Compass

E-34 

To take a digital compass reading

E-40 

To perform magnetic declination correction

E-42 

To perform bidirectional calibration

E-43 

To perform northerly calibration

E-46 

To store a direction angle reading in Bearing Memory

E-48 

To set a map and find your current location

E-50 

To find the bearing to an objective

E-52 

To determine the direction angle to an objective on a map and head in 
that direction

E-8

E-57 Thermometer

E-57 

To enter and exit the Digital Compass/Thermometer Mode

E-59 

To calibrate the temperature sensor

E-61 Specifying 

Temperature 

Unit

E-61 

To specify temperature unit

E-63 Temperature 

Reading 

Precautions

E-64  Using the Moon Data

E-64 

To enter the Moon Data Mode

E-67 

To reverse the displayed Moon phase

E-71  Checking the Current Time in a Different Time Zone

E-71 

To enter the World Time Mode

E-72 

To view the time in another time zone

E-72 

To specify standard time or daylight saving time (DST) for a city

E-9

E-74 Using 

the 

Stopwatch

E-74 

To enter the Stopwatch Mode

E-74 

To perform an elapsed time operation

E-75 

To pause at a split time

E-75 

To measure two finishes

E-77  Using the Countdown Timer

E-77 

To enter the Countdown Timer Mode

E-78 

To specify the countdown start time

E-79 

To perform a countdown timer operation

E-79 

To stop the alarm

Summary of Contents for 3261

Page 1: ...icator E 5 2 Check the Home City and the daylight saving time DST setting Use the procedure under To configure Home City settings page E 26 to configure your Home City and daylight saving time settings Important World Time Mode data depend on correct Home City time and date settings in the Timekeeping Mode Make sure you configure these settings correctly 3 Set the current time To set the time manu...

Page 2: ...ving the watch exposed to direct sunlight or some other very strong light source can cause the battery power indicator to show a reading temporarily that is higher than the actual battery level The correct battery level should be indicated after a few minutes All data stored in memory is deleted and the current time and all other settings return to their initial factory defaults whenever battery p...

Page 3: ...play In most cases holding down these buttons during a scroll operation scrolls through the data at high speed E 25 Timekeeping Use the Timekeeping Mode to set and view the current time and date Press A to toggle between the day of the week and date Date screen and the currently selected World Time Dual Time Day of week Month Day Dual time PM indicator Hour Minutes Seconds Date Screen Dual Time Sc...

Page 4: ...inters that indicate magnetic north south east and west also will appear After the first reading is obtained the watch will continue to take digital compass readings automatically each second for up to 20 seconds After that measurement will stop automatically The direction indicator and angle value will show to indicate that digital compass readings are complete The auto light switch is disabled d...

Page 5: ... show OK and then take direction and temperature readings E 45 Bearing Memory Bearing Memory lets you store a direction reading and display that reading as you take subsequent digital compass measurements The Bearing Memory screen displays the direction angle for the stored direction along with an indicator on the display that also indicates the stored direction When you take digital compass measu...

Page 6: ...orth as measured with all magnetic compasses tends to be greater as one gets closer to either of the magnetic poles You should also remember that some maps indicate true north instead of magnetic north and so you should make allowances when using such maps with this watch E 55 Location Taking a direction reading when you are near a source of strong magnetism can cause large errors in readings Beca...

Page 7: ...y E 65 Moon Data The Moon phase and Moon age information that appears first when you enter the Moon Data Mode shows the data at noon for your currently selected Home City on the current date according to the Timekeeping Mode After that you can specify another date to view data If the Moon data is not correct check your Timekeeping Mode settings and correct them if necessary The Moon phase is displ...

Page 8: ... times and two finishes To enter the Stopwatch Mode Use D to select the Stopwatch Mode STW as shown on page E 22 About one second after STW appears on the display the display will change to show the stopwatch hours To perform an elapsed time operation E E E E A Start Stop Restart Stop Reset Hours 1 100 second Seconds Minutes Current time Hours 1 100 second Seconds Minutes Current time E 75 To paus...

Page 9: ...the illumination duration 1 In the Timekeeping Mode hold down A until SET starts to flash and the city name starts to scroll on the display This is the setting screen 2 Keep pressing D until LT1 or LT3 is displayed See step 3 under To change the current time and date settings page E 29 for information about how to scroll through setting screens 3 Press E to toggle the illumination duration between...

Page 10: ...dicate malfunction and sensor operation should resume once battery voltage returns to its normal level E 96 If ERR keeps appearing during measurement it could mean there is a problem with the applicable sensor ERR appears on the display after I perform bidirectional calibration or northerly calibration If appears and then changes to ERR error on the calibration screen it means that there is someth...

Page 11: ... exposed to light Internal timekeeping Display on 18 hours per day sleep state 6 hours per day 1 illumination operation 1 5 seconds per day 10 seconds of alarm operation per day 10 digital compass operations per week E 102 Frequent use of illumination runs down the battery Particular care is required when using the auto light switch page E 89 L 1 L 2 City Code Table City Code City UTC Offset GMT D...

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