Citizen 8730 User manual

WWFully charge your watch before use by exposing

it to sufficient lightWW

The second hand will move at 2-second intervals when the

watch is insufficiently charged. Charge your watch as

indicated in "Guide to Charging Time" (p. 22).

SSIt is recommended that the watch be exposed to direct

sunlight for a long time once a month to fully charge it.

English

7. Characteristics of the Solar Powered Watch ................................. 18

•Insufficient Charge Warning Function ............................................ 20

• Overcharging Prevention Function ................................................. 21

•Quick Start ...................................................................................... 21

•Guide to Charging Time .................................................................. 22

Precautions ................................................................................................. 24

8. Specifications.................................................................................... 30

1. Your Watch ...................................................................................... 04

2. Operating the Crown ...................................................................... 05

3. Part Names ....................................................................................... 06

4. Setting the Time and Date ............................................................. 08

5. Adjusting the Time and Date .......................................................... 10

• Adjusting the day of week ............................................................... 10

• Adjusting the moon phase .............................................................. 10

• Adjusting the day of month and month ........................................... 12

• Setting the Time ............................................................................. 14

Solar Power

6. Solar Power Function ...................................................................... 16

Table of Contents

iThis watch includes a solar cell surrounding its face and is driven by converting

solar energy into electric energy.

Other Features

1. For the date, the numbered day of the month is indicated using a special hand,

and the month and day of the week are indicated in display windows.

2. The watch is equipped with a moon phase indicator.

1. Your Watch 2. Operating the Crown

There are two models available for the crown: normal and screw lock.

In the case of normal crown watch, simply pull out the crown.

Turn to the left

1. Turn the crown to the left.

2. When the screw lock is released, the

crown pops out a little and stops in

the normal position.

3. After finishing the operation, turn the

crown to the right to lock it.

Second hand

Moon phase Normal position

Day of week

(English only)

Day hand

Month

(English only)

Crown

Time adjustment position

(Time and day of week adjustment)

Date adjustment position

(Day of month and moon phase adjustment)

Month adjustment

button

The illustrations shown in this manual may differ from the actual watch you have purchased.

This manual describes the operation procedures for watch models that have a push button at the 2:00 position

and a crown at the 3:00 position.

This manual describes the operation procedures for watch models of the illustration 1.

LLUse an object with a slender

tip to press the hidden push

button.

Second hand

Moon phase Normal position

Day of week

(English only)

Day hand

Month

(English only)

Crown

Time adjustment position

(Time and day of week adjustment)

Date adjustment position

(Day of month and moon phase adjustment)

Month adjustment

button

3. Part Names

8 9

When adjusting both the time and date, it is convenient to make

settings in the order of "day of week", "moon phase", "month and day

of month", and then "time of day".

Adjusting the day of week

• Crown in position 2

• Turn the crown to the right

(The day of week begins

changing at the 12:00

position. To change to the

next day of week, make the

hour hand go around twice.)

Adjusting the

moon phase

• Crown in position 1

• Turn the crown to

the right

Adjusting the day

of month

• Crown in position 1

• Turn the crown to

the left

Adjusting the month

• Press the month

adjustment button

Setting the time

• Crown in position 2

• Advance the minute

hand and hour hand

by turning the

crown to the right

Turn the crown to

the left to move the

hands back

Adjusting the day

of month

• Crown in position 1

• Turn the crown to

the left

Adjusting the month

• The month changes

each time the month

adjustment button is

pressed

Temporarily set the day of

month to "30"

Adjust to the day of month

for the current day

Adjusting the day

of month

• Crown in position 1

• Turn the crown to

the left

Adjust to the day of month

for the current day

When the day of month

to be set is from the

31st to the 2nd

When the day

of month to be

set is from the

3rd to the 30th

Moon phase

Day of week

(English only)

Day of month Month

Crown

Position 2

Adjusting the time

and day of week

Position 1

Adjusting the day of

month and moon phase

Month adjustment button

Return the

crown to the

normal position.

4. Setting the Time and Date

Confirm the

day of month

to be set.

1110

Moon phase

Day of

week

Day of month Month

Crown

Position 2

Adjusting the

time and day

of week

Position 1

Adjusting the day of

month and moon phase

Month adjustment

button

Adjusting the day of week

1. Pull out the crown to position 2 (time and day of week adjustment).

2. Turn the crown to the right (clockwise) to set the day of week for the current day.

• The day of week begins to change starting at about midnight and is finished

changing by about 5:00 a.m.

Adjusting the moon phase

1. Pull out the crown to position 1 (date

adjustment position).

2. Turn the crown to the right (clockwise)

to set the moon phase for the current

day.

Look up the moon phase for today in the

newspaper or another source and adjust

while referring to "Viewing the moon

phase".

The moon phase indicator does not display the exact shape of the moon. Use it as

a guide to estimate the moon phase.

The moon phase can be more accurately adjusted by adjusting on the day of the new

moon (when the moon indicator is completely hidden on the moon phase, day 0) or

full moon (when the moon indicator is straight up on the moon phase, day 15).

* The indicator may differ depending on the model.

New moon

Moon phase:

Day 0

(Spring tide)

First quarter moon

Moon phase:

Approx. day 7

(Neap tide)

Full moon

Moon phase:

Approx. day 15

(Spring tide)

Last quarter

Moon phase:

Approx. day 22

(Neap tide)

5. Adjusting the Time and Date

1312

1. Pull out the crown to position 1 (date adjustment

position).

2. Adjust the day of month and the month.

• The day of month rotates to the right when the

crown is turned to the left.

• Pressing the month adjustment button changes

the month.

Adjusting the day of month and month

[When the day of month to be set is from the 3rd to the 30th]

ATurn the crown to the left to set the day hand to the current day of the month.

BPress the month adjustment button to set the month to the current month.

[When the day of month to be set is the 31st]

AFirst, temporarily set the day of month to the 30th.

BPress the month adjustment button to set the month to the current month.

CTurn the crown to the left to set the day to the 31st for the correct day of month.

Crown

Position 1

Month

adjustment

button

[When the day of month to be set is the 1st or 2nd]

AFirst, temporarily set the day of month to the 30th.

BPress the month adjustment button to temporarily set the month to one month

before the current month.

Example: Set to December when making settings for January.

Set to February when making settings for March.

CTurn the crown to the left to set the day to the 1st or the 2nd for the correct

day of month.

The month changes to the current month at the same time the day of month

changes from the 31st to the 1st.

3. Return the crown to the normal position.

• Due to the construction of the mechanism, temporary adjustment is required in order

to set the correct date.

1514

1. When the second hand reaches the 12:00

position, pull out the crown to position 2

(time adjustment position).

2. Turn the crown to the right (clockwise) to

adjust the time.

Adjust the time while paying attention to

a.m./p.m. by noting the time at which the

date changes.

3. Set the time to the time signal time, etc. and

return the crown to the normal position.

Setting the Time

[Hints for accurate adjustment]

The time can be more accurately adjusted by first stopping the second hand at the

12:00 position, advancing 4 to 5 minutes past the time that the hour and minute

hand are to be set to, and then set the current time by backing the hands into

position by rotating the hands counterclockwise.

Crown

Position 2

[NOTE]

AIf you adjust the day of month when a time between 9:00 p.m. and 12:00

midnight is being displayed, the day of month sometimes does not change to the

next day even if the actual date changes. Avoid changing the day of month

during this time period.

BThe day of month indicated by this watch follows a 31-day cycle. To advance

to the 1st of the next month after a short month (a month having 30 days or

February), pull out the crown to position 1 and turn it to the left.

CAvoid adjusting the month when the day hand indicates a day from the 31st to

the 2nd.

To make adjustment during this period, first set the day of month outside the

range of the 31st to the 2nd, and then adjust the month. Then, set the day of

month that the day hand should point to.

1716

This watch uses a secondary battery to store electrical energy. When the watch is

fully charged, it will maintain its accuracy for about 6 months.

Always store the watch in a bright location for best results.

jPlacing the watch near a window where its face can

receive sunlight or near another source of light when

you are not wearing it will ensure that the watch is

regularly charged, allowing it to maintain its accuracy.

jWearing clothes with long sleeves makes it difficult for the watch to get the

necessary light, resulting in insufficient charging.

We recommended that you charge the watch for a long time in direct sunlight

once a month.

[NOTE]

Do not charge on surfaces that can easily

become hot, such as a car dashboard.

Solar Power

6. Solar Power Function

1918

iWhen the watch is insufficiently charged, the indication will be changed as follows:

[Normal indication]

The second hand moves at 1-second intervals

[Insufficient charge warning]

The second hand moves at 2-second intervals

[Stopped status]

The watch stops

The watch has been insufficiently charged because

the watch face has not received sufficient light

As secondary battery

capacity diminishes

without charging

As the battery recharges

The watch must be subjected to enough light for a sufficient charge until the watch

hands begin moving.

The second hand starts moving at 2-second intervals.

The display time will be incorrect because the watch has

stopped due to insufficient charge. Adjust to the correct time.

7. Characteristics of the Solar Powered Watch

2 second

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