Citizen CA0820-50X User manual

INSTRUCTION MANUAL

The following provides an explanation of those matters that should be observed
at all times to prevent injury to the wearer or other persons as well as damage to
property before they occur.
Safety Precautions: Observe at All Times
• The degree of injury or damage resulting from incorrect use while ignoring the
indicated matters is classified and explained using the following markings.
WARNING This marking indicates matters for which there is
the risk of death or serious injury.
CAUTION This marking indicates matters for which there is
the risk of injury or property damage only.

• The types of matters to be observed are classified and explained using the following
mark (the following indicates two examples of icons).
This mark indicates that caution or attention is required.
This mark indicates prohibited matters.
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Eco-Drive
Quick Start Function
Overcharge
Prevention Function
Insucient Charge
Warning Function
Chronograph
* e illustrations shown in this manual may dier from the
actual watch you have purchased.

This watch includes a rechargeable cell. This cell is fed electricity by a
solar cell in which light energy is converted to electrical energy.
Product Features
The watch operates by converting sunlight into electrical energy, which is stored in a rechargeable
battery. e rechargeable battery is a clean energy source that does not contain mercury or other harmful
substances. When the watch is fully charged, it will operate continuously for approximately seven months.
A watch that has stopped due to an insuciently charged cell will start operating immediately
when exposed to light.
Special hand movement to let you know when the reserve energy is getting low.
is protects the rechargeable cell from overcharging. is provides worry free enjoyment,
not matter how much light your watch is subjected to.
This feature enables elapsed time measurement (stopwatch.) You can measure time in
activities such as walking, jogging, bicycle riding, etc.
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Contents
Troubleshooting ………………………………………………… 1
Component identication ………………………………………… 2
Recharging your watch …………………………………………… 4
Setting the Time …………………………………………………… 8
Setting the Date …………………………………………………… 10
Using the Chronograph …………………………………………… 12
Precautions ………………………………………………………… 16
Specications ……………………………………………………… 26

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Troubleshooting
e second hand is moving at two-second intervals. P. 6
e chronograph second hand does not return to
reference position even when reset. P.14
e watch does not return to normal one-second
interval movement even when charged.
e watch does not operate even when charged.
e watch stops immediately even when charged.
e chronograph minute hand does not return to
reference position even when reset.
Submit your watch to your nearest Authorized Citizen Service Center.

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Component identication
Minute hand
Button (B)
Date indicator
Chronograph
minute hand
Hour hand
24-hour hand
Second hand
Chronograph
second hand
Crown
Button (A)
* The illustrations shown in this manual
may dier from the actual watch you have
purchased.

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How to use the screw down crown and screw down push button
Unlock Lock
* Unlocking is not required when a standard crown and button are equipped.
Screw down
crown
Screw down
push button
Rotate the crown
counterclockwise
(le) until it releases
from the case.
Rotate the locking
screw counterclockwise
(le), and loosen until
it stops.
Rotate the crown
clockwise (right)
while pushing it in,
and tighten rmly.
Rotate the locking
screw clockwise
(right), and tighten
rmly.
Some models feature a screw down crown and/or screw down push button.
Locking the crown and/or button prevents accidental operation.
ese must be unlocked prior to using certain features of your watch such
as setting the time or date.

4
is watch uses a built-in rechargeable cell to store electrical energy.
Charge the watch by exposing the dial to light such as direct sunlight or
uorescent lamps.
Recharging your watch
To ensure optimal operation, be sure to perform the following.
• Charge the watch in direct sunlight (outdoors) once a month for
5 to 6 hours.
• When you take your watch off, be sure to place it in a location
where the dial can receive light. An ideal location might be a
window sill where it can receive direct sunlight.

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Wearing clothes that cover the watch may inhibit sufficient light from reaching the
watch face, resulting in insucient charging.
Avoid charging the watch under high temperature conditions (approximately
60°C/140°F or more).

6
If the reserve power becomes insucient
(Insucient Charge Warning Function)
When the rechargeable cell charge reaches a low
power state, the Insufficient Charge Warning
Function engages. This cause the second hand
to move in two-second intervals (two-second
interval movement). Be sure to immediately fully
charge your timepiece by exposing it to light.
• Two-second interval movement continues for some seven days until the watch stops
completely due to battery depletion.
When the watch is operating in the two-second interval mode (low
power/insucient charge warning), you cannot operate chronograph.
Caution
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Charging time by environment
Below are the approximate times required for charging when exposing the watch dial
to light continuously. Please use this table as a reference only.
Environment Illuminance
(lx)
Charging time (approx.)
To work for
one day
To start working
normally when the
cell is discharged
To become fully
charged when the
cell is discharged
Outdoors (sunny) 100,000 2 minutes 25 minutes 8.5 hours
Outdoors (cloudy) 10,000 11 minutes 3.5 hours 45 hours
20 cm (7-7/8 inches)
from a uorescent
lamp (30W)
3,000 35 minutes 11 hours 150 hours
Interior lighting 500 3.5 hours 80 hours —
• is watch wil run for approximately 7 months from a full charge without further exposure
to light.

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Setting the Time
Pull the crown
out to position
2.
Pull out the crown just as the
second hand is at the reference
position in order to accurately
align to the second.
Rotate the crown to
set the time.
e 24-hour hand
(located at the 9:00
subdial) moves in
relation to the hour hand.
Determine whether it is
a.m. or p.m. by observing
the 24-hour hand.
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Move the minute hand
ahead of the correct time
by 5 "minutes" and then
return the hand to the
correct "minutes". This
will minimize the eect
of gear play and will
provide more accurate
hand movement.
Press the crown
back into its
normal position.
Be sure to secure if the watch has a screw down
crown. Water may enter your watch.
3

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Pull the crown out to
position 1.
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Setting the Date
Rotate the crown
counterclockwise to set
the date. e date will not
change when the crown is
rotated clockwise.
The date does not change when
you rotate the crown to the right.
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Press the crown back into its
normal position.
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e date must be manually
adjusted for months shorter
than 31-days. You will need to
adjust the date at the start of
March, May, July, October and
December.
Be sure to secure if the watch has a
screw down crown. Water may enter
your watch.
Do not adjust the date between 9
p.m. and 1 a.m.
If you change the date during this
time, the date may not change the
following day.
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e chronograph second hand is normally placed at 12 o'clock position.
Once the measurement starts, it can measure up to 60 minutes in units of
0.2 seconds.
Using the Chronograph
Reference
position
Chronograph second
hand
Chronograph minute
hand
60
1545
30
Reference
position of the
chronograph
minute hand

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The chronograph minute/second hands may be come misaligned if the
watch is subjected to a strong knock.
If the position cannot be corrected by using the reset procedures outlined
on pages 12-13, please contact your nearest Authorized Service Center.
e chronograph does not function if the crown is pulled out to position 2.
e chronograph resets if the crown is pulled out to position 2 during measurement.
To start the chronograph, press and release the upper right button (B) to
commence time measurement.
To stop the chronograph, press and release the upper right button (B) again.
To recommence timing from the stopped position, press and release the
upper right button (B) again.
Time measurement start/stop
To reset the chronograph aer stopping time measurement, press and
release the lower right button (A).
Reset
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Pressing and releasing the lower right button (A) during chronograph operation will
cause timing to stop and the chronograph to reset.
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If the chronograph second hand does not return
to reference position even when reset, perform the
following procedures to align the chronograph
second hand with the reference position.
When the chronograph second hand does not
return to the reference position
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Set the watch to correct the reference position
Pull the crown out to position 2.
Press and hold the upper right
button (B) for 3 seconds or more.
e watch is now set to correct
the reference position.
Time is stopped while aligning with the reference position. Set the time aer aligning.
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Reference
position
1
1
2
1
2