Citizen 8730 User manual

INSTRUCTION MANUAL

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■Fully charge your watch before use by exposing
it to sufficient light ■
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).
＊It is recommended that the watch be exposed to direct
sunlight for a long time once a month to fully charge it.

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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
7. Characteristics of the Eco-Drive Watch ......................................... 18
• Insufficient Charge Warning Function .............................................. 20
• Overcharging Prevention Function ................................................... 21
• Quick Start ......................................................................................... 21
• Guide to Charging Time ..................................................................... 22
Precautions ..................................................................................................... 24
8. Specifications...................................................................................... 30
Table of Contents

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◎This 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

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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.
<Operating the screw lock 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.

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Second hand
Moon phase Normal position
Day of week
(English only)
Date hand
<Illustration 1>
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.
●Use an object with a slender
tip to press the hidden push
button.
3. Part Names

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<Illustration 2>
This manual describes the operation procedures for watch models of the illustration 1.
Second hand
Moon phase Normal position
Day of week
(English only)
Date 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

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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
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
4. Setting the Time and Date
Confirm the
day of month
to be set.

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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
month
• The month changes
each time the month
adjustment button is
pressed
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
Return the
crown to the
normal position.
4. Setting the Time and Date

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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".
5. Adjusting the Time and Date