Citizen 8730 User manual

1
ank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure
correct use.
Aer reading, be sure to store this manual in a safe place should it be needed
for future reference.
* e case has dierent features depending on the model. Details of the case
features are not contained in this manual, see “ http://www.citizenwatch.jp/ ”.
<Engraving position example>
The engraving position
may dier depending on
watch model.
To check the movement number
A case number−4 alphanumeric characters and
6 or more alphanumeric characters−is engraved
on the case back. (Figure on the right)
e rst 4 characters of the case number
represent the movement number of the watch.
In the example on the right, “ △△△△ ” is the
movement number.

2 3
Safety precautions
is manual contains the following instructions that should be strictly
followed at all times to prevent injury to yourself and other persons as well
as damage to property.
• Injuries and damage that might be caused by using the watch improperly or neglecting
any of the instructions or precautions contained in this manual are classied with the
following symbols.
• Important instructions that should be followed are classied with the following symbols.
<About protective stickers>
Please be sure to peel o protective stickers before wearing the watch if glass and
metal parts of the watch (case, metal band, and metal parts of the clasp) are covered
with the stickers. Perspiration or moisture may enter the gaps between the stickers
and the parts, which may result in a skin rash and/or corrosion of the metal parts.
<About band adjustment>
Do not attempt to adjust the watchband (including the metal and rubber type) by
yourself (except watches with accessory tool for band adjustment). Doing so may result in
dropping the watch or injury during the adjustment. Please contact your dealer or Citizen
Customer Support Center for adjustment of the band; otherwise, adjustment may not be
possible or not be free of charge.
DANGER Highly likely to cause death or serious injury.
WARNING Can cause serious injury or death.
CAUTION Can or will cause minor or moderate injury or damage.
Warning (caution) symbol followed by instructions that should
be followed or precautions that should be observed.
Warning (caution) symbol followed by prohibited matters.

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Table of Contents
1. Your Watch …………………………………………………………6
2. Operating the Crown ………………………………………………7
3. Part Names …………………………………………………………8
4. Setting the Time and Date …………………………………………10
5. Adjusting the Time and Date ………………………………………12
• Adjusting the day of week …………………………………………12
• Adjusting the moon phase ………………………………………12
• Adjusting the day of month and month …………………………14
• Setting the Time …………………………………………………16
6. Characteristics of the Solar Powered Watch ………………………18
• Insucient Charge Warning Function ……………………………20
• Overcharging Prevention Function ………………………………21
• Quick Start …………………………………………………………21
• Guide to Charging Time ……………………………………………22
7. Solar-Powered Watch Handling Precautions ………………………23
8. Precautionary Items and Usage Limitation ………………………24
9. Warranty and Service ………………………………………………34
10. Specications ………………………………………………………36

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1. Your Watch
is watch includes a solar cell surrounding its face and is driven by
converting solar energy into electric energy.
Other Features
•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.
•e watch is equipped with a moon phase indicator.
2. Operating the Crown
<About the crown>
Some models use screw down system for the crown.
Accidental operations can be prevented when the watch is not being
operated by locking the crown. To operate the watch, release the lock.
• If your watch does not have a screw down crown, operations can be
performed without locking or unlocking the crown.
When the screw lock is released, the
crown extends to the normal position.
Lock the crown
Press the crown
and rotate it
to the right
(clockwise) to
tighten the screw
lock.
Unlock the crown
Rotate the crown
to the le 2
Before operation After operation

8 9
3. Part Names
Second hand
Moon phase
Normal
position
Day of week
(English only)
Day hand
<Illustration 1> <Illustration 2>
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
• Use an object with a
slender tip to press
the hidden push
button.
0 1
e illustrations shown in this manual may dier from the actual watch you have purchased.
is 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. is manual describes the operation procedures for watch models of the illustration 1.
2 0 1 2
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

1011
Adjusting the day of
month
• Crown in position 1
• Turn the crown to
the left
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.)
4. Setting the Time and Date
0 1 2
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".
Temporarily set the day of
month to "30"
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.
Conrm the
day of month
to be set.
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
Adjusting the month
• The month changes
each time the month
adjustment button is
pressed
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
Adjust to the day of month
for the current day
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

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5. Adjusting the Time and Date
<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
nished changing by about 5:00 a.m.
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".
<Viewing the moon phase>
e moon phase indicator does not display the exact shape of the moon.
Use it as a guide to estimate the moon phase.
<To Set the Moon Phase Accurately>
e 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).
0 1 2
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
* The indicator may dier 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)
<Adjusting the moon phase>

1415
1. Pull out the crown to position 1 (date
adjustment position).
2. Adjust the day of month and the month.
• e day of month rotates to the right
when the crown is turned to the le.
• Pressing the month adjustment
button changes the month.
[When the day of month to be set is the 1st or 2nd]
①First, temporarily set the day of month to the 30th.
② Press 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.
③Turn the crown to the le to set the day to the 1st or the 2nd for the
correct day of month.
e 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.
[When the day of month to be set is from the 3rd to the 30th]
①Turn the crown to the le to set the day hand to the current day of the month.
②Press the month adjustment button to set the month to the current month.
[When the day of month to be set is the 31st]
①First, temporarily set the day of month to the 30th.
②Press the month adjustment button to set the month to the current month.
③Turn the crown to the le to set the day to the 31st for the correct day of
month.
0 1
<Adjusting the day of month and month>
Crown
Position 1
Month
adjustment
button

1617
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.
[NOTE]
①If 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.
②The 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.
③Avoid 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.
<Setting the Time>
Crown
Position 2
01 2
[Hints for accurate adjustment]
e time can be more accurately adjusted by rst 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.

1819
6. Characteristics of the Solar Powered Watch
When the watch is insuciently charged, the indication will be changed as follows:
[Normal indication]
The second hand moves at
1-second intervals
[Insucient 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 rechargeable cell
capacity diminishes
without charging
As the battery recharges
The watch must be subjected to enough light for a sucient 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 insucient charge. Adjust to the correct time.
2 second
2 second