MA1612-EA
© 2016 CASIO COMPUTER CO., LTD.
Operation Guide 5541
x Be sure to keep all user documentation handy for future reference.
x Your watch may differ somewhat from the one shown in the illustration.
x Some models may use a combination of hands and rotating disks to indicate
information. The word “hand” in this section is used to mean both analog hands
and rotating disks.
Stopwatch Minute Hand
Hour Hand Minute Hand
Second Hand
24 Hour Hand
A
30
Click 2
Click 1
Crown
B
Stopwatch Second Hand
Stopwatch functions
Day
To change the day settingTo adjust the time setting
When the second hand is at
12 o’clock, pull the
Click 2.
Rotate the Crown to change the
time setting.
Push the Crown back in on a time
signal to resume timekeeping.
Note
x Take care that you set the correct AM
or PM time.
x When changing the time, move the
minute hand four or five minutes past
your final setting, and then back it up
to the setting you want.
Crown out to
Pull the Crown out to Click 1.
Rotate the Crown towards you to
set the day.
Push the Crown back in.
Note
x The day setting uses a 31-day month.
Make adjustments for months of
shorter lengths.
x Avoid changing the day setting
between the hours of 9 p.m. and
1 a.m. Otherwise, the day setting may
not change correctly at midnight.
Using the Stopwatch
The stopwatch measures elapsed time in 1-second increments up to 29minutes,
59seconds.
Elapsed time
A
Start Stop Resume Stop Reset
Split time
A
Start Split Split release Stop Reset
Two finishes
A
Start Split
Important!
x Do not operate the stopwatch with the crown pulled out.
Note
x An elapsed time operation will stop automatically at the end of 30 minutes.
A
B
B
First runner
finishes.
Display time of
first runner.
A A
B A
A B
Stop
Second runner
finishes.
Split release
Display time of
second runner.
B
B
B
Reset
Correcting the 0 Positions of the Hands
Perform the following procedure if the stopwatch hands do not return to their 0 (zero)
positions when you reset the stopwatch.
Pull the Crown out to Click 2.
Use A (clockwise) and B (counterclockwise) to move the
Stopwatch Second Hand
x Holding down either button will move the second hand at high speed, until you
release the button.
x The
Stopwatch Minute Hand
After all of the hands are the way you want, push the Crown back in.
Important!
x Timekeeping stops while the crown is pulled out. Correct the current time setting
after performing the above operation.
and
Stopwatch Minute Hand
is syncronized with the
to 12 o'clock.
Stopwatch Second Hand
.
Crown Operations
Some water-resistant models (100 meters, 200 meters)
have a screw-in crown. When you need to perform a crown
operation, rotate it towards you to unscrew it. Then pull
the crown out. Avoid applying undue force when pulling.
The watch loses its water resistance while the crown is
unscrewed. After performing a crown operation, fully screw
the crown back in.
If your watch has a rotary bezel...
You can rotate the bezel to align its ▼ mark with the
minute hand. Then you will be able to tell how much
time has elapsed since aligning the ▼ mark.
Current
Crown
Loosen
Start
Elapsed time
Specifications
Accuracy at normal temperature: ±20 seconds average per month
Stopwatch: Measuring Capacity: 29'59" (30 minutes)
Battery: One silver oxide battery (Type: SR920SW)
Battery Life: Approximately 3 years (30 minutes stopwatch operation per day)
Specifications are subject to change without notice.
Measuring Unit: 1 second
Measurements: Elapsed time; split time; two finishes
1