Casio 3237 Operation Manual Download Page 3

Operation Guide 3237

E-26

Dual Time: 

Hour, minutes, seconds, p.m. (P)

Other: 

Backlight (light-emitting diode)

Battery: 

One lithium battery (Type: CR2025)

Approximately 10 years on type CR2025 (assuming alarm operation 10 sec./day,
and one backlight operation 1.5 sec./day)

E-25

Specifications

Accuracy at normal temperature: 

±

30 seconds a month

Timekeeping: 

Hour, minutes, seconds, p.m. (P), month, day, day of the week

Time system: Switchable between 12-hour and 24-hour formats
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099

Alarms:

5 Multi-function

›

alarms (Four one-time alarms; one snooze/one-time alarm);

Hourly Time Signal

›

Alarm type: Daily alarm, Date alarm, 1-month alarm, Monthly alarm

Countdown Timer

Measuring unit: 1 second
Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Other: Auto-repeat function

Stopwatch

Measuring unit: 1/100 of a second
Measuring capacity: 23:59' 59.99''
Measuring modes: Elapsed time, split time, two finishes

E-24

Backlight Precautions

The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.

The backlight automatically stops illuminating whenever an alarm sounds.

Frequent use of the backlight shortens the battery life.

E-23

Reference

This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.

Auto return features

If you leave a screen with flashing digits for two or three minutes without performing
any operation, the watch automatically saves any settings you have made up to that
point and exits the setting screen.

Data and Setting Scrolling

The 

D

 button is used to scroll through setting screen data on the display. Holding

down this button during a scroll operation scrolls through the data at high speed.

E-22

Backlight

The backlight uses an LED (light-emitting diode) and a
light guide panel that cause the entire display to glow for
easy reading in the dark.

See “Backlight Precautions” on page E-24 for other
important information about using the backlight.

To turn on the backlight

In any mode, press 

B

 to illuminate the display for about

one second.

E-21

Dual Time

The Dual Time Mode lets you keep track of time in a different time zone.

In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.

To set the Dual Time

1. Press 

C

 to enter the Dual Time Mode (page E-5).

2. In the Dual Time Mode, hold down 

A

 until the hour

setting starts to flash, which indicates the setting
screen.

3. Press 

C

 to change the selection in the following

sequence.

Hour

Minutes

4. Press 

D

 to increase the setting.

5. Press 

A

 to exit the setting screen.

Seconds

Hour : Minutes

E-20

To measure times with the stopwatch

Elapsed time

Start

Stop

Re-start

Stop

Clear

Start

Split

(

SPL 

displayed)

Split release

Stop

Clear

Start

Split

Stop

Split release

Clear

Split time

Two Finishes

First runner 
finishes.
Display time of 
first runner.

Second runner 
finishes.

Display time of 
second runner.

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