Casio Casio Watch 5242 User's Manual

Casio Watches User's Manual - Casio Watch 5242.
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MO1205-EA

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ENGLISH

Congratulations upon your selection of this CASIO watch.

Applications
Built-in sensors are used to take direction, barometric pressure, temperature, and altitude readings, which 
are displayed by the hands of the watch. Such features make this watch useful when hiking, mountain 
climbing, or when engaging in other such outdoor activities.

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.

• 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 confi rm 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.

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About This Manual

Operations are performed using the watch’s crown, and the four buttons 
indicated by the letters 

A, B, C and L in this manual.

Hands and Date Indicator
z Hour Hand

x Minute Hand

c Second Hand

v Mode Hand (Indicates the day of the week in the Timekeeping Mode.)

b Day Indicator

This User’s Guide uses the numbers shown above to identify watch 
hands and indicators.
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.

30

Crown

30

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Using the Crown

You can use the crown to perform a number of different operations, and to change the settings of the 
watch.

To lock the crown

To lock the crown, gently push in as you rotate it away from you. Lock the crown fi rmly 
by rotating until its inner ring is no longer visible.

Important!
• You should normally have the crown locked during normal daily use. Leaving the crown unlocked 

creates the risk of unintended operations or even damage due to impact.

To unlock the crown

Rotate the crown towards you until it is completely loosened. When the crown is 
loosened completely, you will be able to see its inner ring as shown in the nearby 
illustration.

Outer ring

Inner ring

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To pull the crown out

After loosening the crown, pull it out.
• The watch will beep when you pull the crown out.

To rotate the crown

Rotating the crown after you pull it out will move the watch’s hands. You also can 
move the hands at high speed by performing the operation described below.

To start high-speed hand movement

With the crown pulled out, rotate the crown more than once in the direction that you 
want to move the hands. When you release the crown, the hands will start to move at 
high speed.

To stop high-speed hand movement

Rotate the crown towards you or press any button.

Note
High-speed hand movement is available in the Timekeeping Mode, when setting a 
time in the Alarm Mode, and when correcting day indicator settings.

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To push the crown in

Push the crown back in.
• The watch will beep when you push the crown back in.

Note
If you do not perform any operation for about two or three minutes after pulling out the crown, crown 
operations will become disabled automatically. If this happens, push the crown back in and then pull it 
out again to re-enable crown operations.

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Things to check before using the watch

1. With the crown locked, hold down 

B for at least two seconds to enter the Timekeeping Mode. 

Observe the movement of the 

Second Hand.

Is the 

Second Hand moving smoothly at one-second intervals?

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-11).

NO

YES

YES

Is the 

Second Hand jumping at two-second intervals 

or is it stopped completely? 

The watch is charged. For details about 
charging, see “Charging the Watch” 
(page E-11).

NEXT

2. Check the Home City.

Use the procedure under “To confi gure Home City settings” (page E-27) to confi gure your Home City.

Important!
Proper time calibration signal reception depends on correct Home City, time, and date settings. Make 
sure you confi gure these settings correctly.

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3. Set the current time.

 To set the time using a time calibration signal

See “To get ready for a receive operation” (page E-18).

 To set the time manually

See “Confi guring Current Time and Date Settings Manually” (page E-31).

The watch is now ready for use.
• For details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic 

Timekeeping” (page E-16).

Operation Guide 5242

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