Casio MA0907-EA User's Manual

Casio Watches User's Manual - MA0907-EA.
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Operation Guide 4358/5009 (EFX)

MA0907-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.

• Be sure to keep all user documentation handy for future reference.

• 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.

• The configuration of your watch may differ somewhat

from that shown in the illustration.

General Guide

Crown Positions

First click
(Setting day and 
day of the week) 

Second click
(Setting time) 

Crown
(Normal position) 

Timekeeping

First click
(Setting day and 
day of the week) 

Second click
(Setting time) 

Crown
(Normal position) 

Minute hand 

Day of the week 

Hour hand 

Day 

Second hand 

To set the time
1. Pull the crown out to the second click when the second hand is at 12 o’clock

position and the second hand stops.

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 away from you (in the

direction indicated by the arrow in the illustration).

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.

To set the day of the week

1. Pull the crown out to the first click.
2. Set the day of the week by rotating the crown towards

you (in the direction indicated by the arrow in the
illustration).

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

• Avoid changing the day of the week 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 59 minutes, 59 seconds.

Stopwatch minute hand 

Stopwatch second hand 

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.

3. Check the elapsed time.

• The example below shows an elapsed time of two minutes, 44 seconds.

Stopwatch second hand 
[44 seconds] 

Stopwatch minute hand 
[2 minutes]  

• Press B to reset the stopwatch. 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 minute hand and second hand become

misaligned, use the following procedures to adjust the positions of the hands so they
point to 12 o’clock 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 minute

hand and second hand.

2. Pull out the crown to the second click.
3. Press A to move the stopwatch minute hand and second hand.
4. If the stopwatch minute hand is aligned correctly, proceed to step 5. To return the

minute hand to the 12 o’clock position, press B.

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.

Specifications

Accuracy at normal temperature: 

±20 seconds a month

Display: 3 analog hands (timekeeping hour and minutes, stopwatch seconds),

3 dials (timekeeping seconds, day of the week, stopwatch minutes), day

Stopwatch function: Measuring capacity: 59'59''/Measuring unit: 1 second

Measuring modes: Elapsed time

Battery: One silver oxide battery (Type: SR626SW)

Approximately 2 years on type SR626SW (assuming one stopwatch
operation 60 min./day)

0.498741s