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Manual Casio A158WETG-9AEF Watch

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Manual

Operation Guide 10B+7L(Ver.C)

Reading the display

[

Regular timekeeping

mode

]

[Stopwatch mode]

[Time/calendar

setting mode]

[Daily alarm mode]

SU: Sunday, MO: Monday, TU: Tuesday, WE: Wednesday, TH: Thursday, FR: Friday, SA: Saturday

(Changeover between 12-hour and 24-hour formats) In regular timekeeping mode,

with every push of A, the display is switched between 12-hour and 24-hour formats.

Day

Minute

Date

(Light)

Mode indicator

Day

Hour

MinutePM

1/100 second

Minute

Hour

Second

Hour

Date

Mode

indicator

Alarm-

on-mark

Time-signal-on-mark

Press

Second

Minute

Second

Press C.

Setting daily alarm

If the daily alarm is set, the buzzer sounds for 20 seconds at the preset time every day

until cleared. To stop the buzzer, press the L button. If the time signal is set, the watch

sounds every hour on the hour.

(Sound demonstration) Press and hold the

button in alarm mode to sound the buzzer.

If the

button is pressed, the watch reverts to the regular timekeeping mode.

(Quick digit advance) When the A button is pressed for more than 2 seconds, the digit

advances quickly. When released, the digit advance will stop.

[Hour setting] [Minute setting]

Press L to set minute digits.

One minute advances with every

push of A. Press L to complete.*

Press L in the daily alarm mode to

set hour. One hour advances with

every push of A.

[On or off setting of daily alarm and time signal]

[The alarm-on-

mark and time-

signal-on-mark

appear.]

[The alarm-on-

mark and time-

signal-on-mark

disappear.]

[The time-signal-

on-mark only ap-

pears.]

The daily alarm

and time signal

sound.

The daily alarm

and time signal

do not sound.

The daily alarm

only sounds.

The time signal

only sounds.

Press A.

Press

[The alarm-on-mark

only appears.]

Stopwatch operation

A signal confirms start/stop operation.

(Working range) The stopwatch display is limited to 59

minutes 59.99 seconds, for longer times reset and start

again.

(a) Net time measurement

Start Stop Re-start Stop Reset

Reset

ResetStart

Split

Split release

Stop

Start

Split

The first runner

finishes.

Stop

The second runner

finishes. Record the

time of the first runner.

Split release

Record the time

of the second

runner.

(b) Split time measurement

Time loss

IMPORTANT: Setting sequence MUST BE FOLLOWED when making any new setting.

[Month setting]

[Date setting] [Day setting]

• Correction of any digit, if not required, can be skipped by pressing the L button

repeatedly.

• If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the regular timekeeping mode automat-

ically.

Press L to move to the

month setting. Press A to

increase the number.

Press L to move to the date

setting. Press A to increase

the number.

Press L to move to the day

setting. Pressing A advanc-

es to the next day. And press

C to complete.

Setting time and calendar

[

Regular timekeeping

]

Press A to adjust

seconds.*

[Second adjusting] [Hour setting] [Minute setting]

Press C three times

to change regular

timekeeping mode

to time/calendar

setting mode.

Press L to move to

the hour setting.

Press A to increase

the number.

Press L to move to

the minute setting.

Press A to increase

the number.

Precise time can be maintained by correcting the seconds once a month on a time signal from

a radio, TV, telephone, etc.

(Quick digit advance) When the A button is pressed for more than 2 seconds, the digit

advances quickly. When released, the digit advance will stop.

Specifications

Accuracy at normal temperature: ±30 seconds a month

Display capacity:

• Regular timekeeping mode

Hour, minute, second, am/pm, date and day

Calendar system: Auto-calendar set at 28 days for February

• Daily alarm mode

• Hourly time signal function

• Stopwatch mode

Measuring capacity: 59 minutes 59.99 seconds

Measuring unit: 1/100th of a second

Measuring modes: Normal time, net time, split time and 1st-2nd place times

Battery:

One lithium battery (type: CR-2016 –– except Module 1271/BR-2020 –– Module 1271 only)

Approx. 7 years operation on type CR-2016 (except Module 1271) /10 years on type BR-

2020 (Module 1271 only). [assuming alarm operation for 20 sec./day and one light operation

for 1 sec./day]

NOTE: THERE IS NO WAY unit components can be damaged or malfunction, due to

misoperation of buttons. If confusing information appears on the display it means entry

sequence was incorrect. Please read the manual and try again.

MA1211-ED

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Specifications

Brand	Casio
Model	A158WETG-9AEF
Category	Watches
File type	PDF
File size	0.61 MB

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Frequently Asked Questions about Casio A158WETG-9AEF Watch

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

A battery in my device is oxidized, can I still safely use it? Verified

Ja, the device can still be safely used. Firstly, remove the oxidizd battery. Never use bare hands to do this. Then clean the battery compartment with a cotton swab dipped in vinegar or lemon juice. Let it dry and insert new batteries.

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My mechanical watch runs fast, what can I do? Verified

This might be caused by exposure to a magnetic field. It can be solved by a demagnetisation process performed by a professional watchmaker.

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What do AM and PM stand for? Verified

AM stands for Ante Meridiem and indicates that the time is before midday. PM stands for Post Meridiem and indicates that the time is past midday.

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What is a 'Chronograph'? Verified

A 'Chronograph' is literally a 'writer of time'. The term is used to describe clocks and watches that tell the time of day as well as measure a certain period of time, like a stopwatch.

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What is GMT? Verified

GMT stands for Greenwich Mean Time (sometimes called UTC, standing for Coordinated Universal Time). It is the time for the longitude 0, that passes through Greenwich near London.

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What is a quartz movement? Verified

Watches and clocks with a quartz movement are driven by a battery. This sends an electric current through quartz crystals that will vibrate. These vibrations are passed on to the movement. Because the vibrations have a fixed frequency, watches and clocks with a quartz movement are extremely precise.

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There is moisture on the inside of the glass of my Casio watch, what should I do? Verified

Casio states that if the moisture appeared after an extreme change in temperature and disappears relatively quickly afterwards, there is probably nothing wrong. If the moisture does not disappear, you should have your watch repaired as soon as possible.

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