G-Shock Casio Watch E-9 Prospecto

Accuracy at normal temperature:  ±30 seconds a month
Timekeeping:  Hour, minutes, seconds, p.m., day, and day of the week 

Time system: Switchable between 12-hour and 24-hour formats
Calendar system: Auto-calendar set at 28 days for February

Alarm: Daily alarm, Hourly time signal
Stopwatch

Measuring units: 1/100 seconds
Measuring capacity: 59 minutes, 59.99 seconds
Measuring modes: Elapsed time, split time, and two fi nishes

Illumination: LED (light-emitting diode)
Battery: One lithium battery

Type: CR1616

Battery life: Approx. 5 years

x  1 second of illumination operation per day

x  20 seconds of alarm operation per day

 While the second’s digits are selected (fl ashing), press 

3. 

A to reset the seconds to 

. If you press 

A while the second’s count is in the range of 30 to 59, the seconds 

are reset to   and 1 is added to the minutes. If the second’s count is in the range of 
00 to 29, the minute’s count is unchanged.
 While any other digits (besides seconds) are selected (fl ashing), press 

4. 

A to 

increase the number. While the day of the week is selected, pressing 

A advances 

to the next day. Holding down 

A changes the current selection at high speed.

 After you set the time and date, press 

5. 

B to return to the Timekeeping Mode.

 If you do not operate any button for one or two minutes while a selection is fl ashing, 

 

x

the fl ashing stops and the watch goes back to the Timekeeping Mode automatically.

Use the Time Setting Mode to set the current time and 
date.

 Use 

1. 

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

 The second’s digits fl ash because they are selected.

 

x
 Press 

2. 

C to change the selection in the following 

sequence.

Minutes

Seconds

Month

Hour

Day

Day of 

the Week

A

A

A

A

C

A

C

C

A

C

Split
(SPL displayed)

A

C

A

C

C

Split
First runner 
fi nishes.
Display time of 
fi rst runner.

Stop
Second runner 
fi nishes.

Split release
Display time of 
second runner.

The Stopwatch Mode lets you measure elapsed time, split 
times, and two fi nishes. The range of the stopwatch is 
59 minutes, 59.99 seconds.

 The stopwatch continues to run, restarting from zero after 

 

x

it reaches its limit, until you stop it.
 The stopwatch measurement operation continues even if 

 

x

you exit the Stopwatch Mode.
 Exiting the Stopwatch Mode while a split time is frozen 

 

x

on the display clears the split time and returns to elapsed 
time measurement.
 All of the operations in this section are performed in the 

 

x

Stopwatch Mode, which you enter by pressing 

B (page 

E-5).

To stop the alarm 
Press any button to stop the alarm after it starts to sound.

To switch the Daily Alarm and Hourly Time Signal on and off
Press 

A while in the Alarm Mode to change the status of the Daily Alarm and Hourly 

Time Signal in the following sequence.

Both on

Both off

Daily Alarm only

Hourly Time 
Signal only

To test the alarm
Hold down 

A while in the Alarm Mode to sound the alarm.