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Operation Guide 4389 (EFX)

MA0708-EA

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.

For a watch with an elapsed time bezel
Rotate the elapsed time bezel to align the 

 mark with

the minute hand. After certain amount of time elapsed,
read the graduation on the elapsed time bezel which the
minute hand points to. The elapsed time is indicated.

50

40

30

20

10

Elapsed time bezel

Some water resistant models are equipped with a

screw lock crown.

With such models, you must unscrew the crown in the

direction noted in the illustration to loosen it before
you can pull it out. Do not pull too forcibly on such
crowns.

Also note that such watches are not water resistant

while their crowns are  loosened. Be sure to screw the
crowns back in as far as they will go after making any
setting.

About This Manual

Button operations are indicated using the letters shown
in the illustration.

General Guide

Crown Positions

First click
(Setting day) 

Second click
(Setting time) 

Crown
(Normal position) 

Timekeeping

Minute hand 

Hour hand 

Day 

Second hand 

First click
(Setting day) 

Second click
(Setting time) 

Crown
(Normal position) 

To set the time

1. Pull the crown out to the second click.

At this time, the second hand will move to the 12 o’clock position and stop there.

2. Set the hands by rotating the crown. Rotate the crown to move the hands

clockwise. Move the minute hand four or five minutes past the time you want to set,
and then back it up to the proper setting.

Carefully set the time, making sure to distinguish between AM and PM.

3. Push the crown back in to the normal position to restart timekeeping.

To set the day

1. Pull the crown out to the first click.
2. Set the day by rotating the crown towards you.
3. Push the crown back in to the normal position.

Avoid changing the date setting while the current time is between 9:00 p.m. and
1:00 a.m.

Using the Stopwatch

The stopwatch lets you measure elapsed time up to 11 hours, 59 minutes, 59.95
seconds.

Stopwatch hour hand 

Stopwatch minute hand 

Stopwatch second hand 

Stopwatch 1/20 second hand
*  This hand moves right and left 

to indicate the 1/20 second 
count during the first  
60 seconds

To measure elapsed time

1. Press 

A

 to start the stopwatch.

2. Press 

A

 to stop the stopwatch.

You can resume the measurement operation by pressing 

A

 again. The

stopwatch 1/20 second hand moves right and left to indicate the 1/20 second
count during the first 60 seconds.

3. Check the elapsed time.

The example below shows an elapsed time of two minutes, 37.80 seconds.

Stopwatch second hand 
[37 seconds] 

Stopwatch minute hand 
[2 minutes]  

Stopwatch 1/20 second hand 
[80] 

Press 

B

 to reset the stopwatch. To return the function of the stopwatch 1/20 second

hand to the timekeeping seconds hand (indicating the current seconds count), press

B

 again. This will enter the Timekeeping Mode.

Notes:

Do not try to perform stopwatch operations while the crown is pulled out either to the
first or second click. If you try to press a button, you might accidentally cause the
crown to rotate and change the current time or day setting.

If the starting positions of the stopwatch second hand and 1/20 second hand
become misaligned, use the following procedures to adjust the position of the
stopwatch second hand so it points to 12 o’clock and the 1/20 second hand so it
points to 

.0

 when the stopwatch is reset.

To adjust the positions of the stopwatch hands

1. Press 

B

 to reset the stopwatch, and check the alignment of the stopwatch second

hand and 1/20 second hand.

2. Pull out the crown to the second click.
3. Press 

A

 to move the stopwatch second hand.

4. If the stopwatch 1/20 second hand is aligned correctly, proceed to step 5. If the

stopwatch 1/20 second hand is also misaligned, press 

B

 to move the stopwatch

1/20 second hand.

5. After making the adjustments you want, push the crown back in to its normal

position.

Note that pulling the crown out also stops the timekeeping second hand. After
performing the above procedure, you should also adjust the timekeeping setting.

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