Citizen B023 User manual

CONTENTS
A. BEFORE USING .......................................................................................2
B. SETTING THE TIME .................................................................................3
C. FUNCTIONS OF SOLAR POWERED WATCH ........................................4
Insufficient Charge Warning Function........................................................6
Time Setting Warning Function .................................................................7
D. CARE AND HANDLING DURING CHARGING ........................................8
E. REPLACING THE SECONDARY BATTERY............................................9
F. TIME REQUIRED FOR CHARGING ......................................................10
G. PRECAUTIONS ......................................................................................12
H. SPECIFICATIONS...................................................................................18
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English

A. BEFORE USING
This watch is powered not by an ordinary battery, but by converting photo
energy to electrical energy.
Before using, expose to light and make sure the watch is sufficiently
charged.
Since it takes time to recharge the watch until it starts running again
once it has stopped, try to make sure the watch is charged everyday.
If the watch has stopped running, expose it to intense light such as
sunlight to recharge. When recharging using light of low illuminance of
3,000 lx or less, pull out the crown before charging. After charging,
always make sure to correctly set the time and return the crown to the
normal position before using the watch.
A secondary battery is used in this watch to store electrical energy. This
secondary battery is a clean energy battery which does not use any toxic
substances such as mercury. Once fully charged, the watch will continue
to run for about 1 year without further charging.
To use this watch comfortably, make sure that the watch is always recharged
before it stops.
There is no risk of overcharging this watch. (Overcharge Prevention Function is
included)
B. SETTING THE TIME
If the crown is of the screw- type, set the time after first loosening the screw.
Retighten the screw after the time has been set.
■■Setting the time
1. Pull the crown out to the time setting position.
2. Turn the crown to set the time.
3. After setting the time, firmly push the crown back in to the normal position.
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Solar cell
Normal
position
Time setting
position
Crown

If the charge becomes insufficient, a warning function will be activated that
causes the display to change as shown below.
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C. FUNCTIONS OF SOLAR POWERED WATCH
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If insufficiently
charged and
time is set
If insufficient charge continues
Stop
Recharge by exposing to light
Time setting
warning display
If insufficiently
charged
If sufficiently charged and time is set
Normal time
display
Insufficient charge
warning display
If charged
One minute
interval movement
20 second interval
movement (minute hand) Irregular one minute
interval movement

■Time Setting Warning Function
Although the watch hands will begin to move
when the watch is charged after stopping,
since the time is incorrect, the minute hand will
move by irregular one minute interval
movement to indicate that the time is incorrect.
When this happens, fully recharge the watch
and reset the time. The watch will continue to
run by irregular one minute interval movement
until the time is reset even if fully charged.
■■Overcharge Prevention Function
You can recharge without worry.
Once the secondary battery is fully recharged,
the overcharging prevention feature comes into
operation and prevents over-recharging.
■■Insufficient Charge Warning
Function
The minute hand moves by one minute interval
movement to indicate insufficient charging.
Although the watch keeps the correct time
when this happens, the watch will stop after
about 2 weeks after the start of one minute
interval movement.
Recharge the watch by exposing to light. The
watch will then begin to run normally again.
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[Irregular one minute
interval movement]
: Minute hand moves
irregularly in three steps
once every minute.
1 min. 1 min.
1 min.
1 min.
Minute hand
[One minute interval
movement]
: Minute hand moves
regularly in three steps
once every minute.
Minute hand

D. CARE AND HANDLING DURING CHARGING
■Notes on use
Take care to charge your watch during use.
Please note that if you wear long sleeves, the watch can easily become
insufficiently charged because it is hidden and not exposed to light.
• When you take the watch off, place it in as bright a place as possible, and it
will always continue to run properly.
■■Notes on recharging
• Avoid recharging at high temperatures (over about 60。 C/140。 F), otherwise
the watch will be damaged during recharging.
(eg) Charging the watch near a light source that easily becomes hot, such as
an incandescent lamp or a halogen lamp.
Charging in a place that easily becomes hot, such as a dashboard.
When you charge the watch by an incandescent lamp, take a distance about
50cm (20in.) from the light source to prevent extremely high temperature.
E. REPLACING THE SECONDARY BATTERY
Unlike ordinary batteries, the secondary battery used in this watch doesn't
have to be periodically replaced due to repeated charging and discharging.
CAUTION
Never use another battery different from the secondary battery used in this
watch.
The watch structure is so designed that a different kind of battery other than that
specified cannot be used to operate it. In case a different kind of battery such as
a silver battery is used by some chance, there is a danger that it will be
overcharged to burst, causing damage to the watch and even to the human
body.
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F. TIME REQUIRED FOR CHARGING
Time required for recharging may vary according to the design (color of the dial,
etc.) and operating environment. The following table will serve as a rough
reference.
Illuminance
(lx)
500
1,000
3,000
10,000
100,000
Environment
Inside an ordinary
office
Charging time (approximate)
2 hours
1 hour
18 minutes
6 minutes
1 minute
From the stop state
to 20 second
movement
--
--
25 hours
6.6 hours
45 minutes
Full charge
time
--
--
--
60 hours
11 hours
60-70cm (24-28in.) under
a fluorescent light (30W)
20cm (8in.) under a
fluorescent light (30W)
Outdoors, cloudy
Outdoors,
summer, sunny
One day
usage
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When recharging using light of low illuminance of 3,000 lx or less, pull out the
crown before charging. Figures in parentheses in the table indicate charging
times with the crown pulled out.
* The recharging time is the time when the watch is continuously exposed to
light.
Full charge time………The time to fully recharge after the watch has stopped.
One day usage ……… The time required for the watch to run for one day with
20 second interval movement

G. PRECAUTIONS
WARNING: Water-resistance performance
There are several types of water-resistant watches as
shown in the following table.
The unit "bar" is roughly equal to 1 atmosphere.
* WATER RESIST (ANT) xx bar may also be indicated
as W.R. xx bar.
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Minor exposure to water
(washing face, rain, etc.)
Indication
WATER RESIST or
no indication
Dial Case
(Case back)
Specifications
WR 50 or WATER
RESIST 50
WR 100/200 or
WATER RESIST
100/200
WATER
RESIST(ANT)
WATER RESIST(ANT)
5 bar or
WATER RESIST(ANT)
WATER RESIST(ANT)
10 bar/20 bar or WATER
RESIST(ANT)
Water-resistant to 3
atmospheres
Water-resistant to 5
atmospheres
Water-resistant to
10/20 atmospheres OK
OK
OK
For correct use within the design limits of the watch, confirm the level of water-
resistance of your watch, as indicated on the dial and case, and consult the table.
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Examples of use
OK
OK
NO
Moderate exposure to
water (washing, kitchen
work, swimming, etc.)
OK
NO
NO
Marine sports (skin
diving)
NO
NO
NO
Scuba diving (with air
tank)
NO
NO
NO
Operation of the crown
with moisture visible

• If seawater enters the watch, place the watch in a box or plastic bag and
immediately take it in for repair. Otherwise, pressure inside the watch will
increase, and parts (crystal, crown, buttons, etc.) may come off.
CAUTION: Keep your watch clean.
• Leaving dust and dirt deposited between the case and crown may result in
difficulty in pulling the crown out. Rotate the crown while in its normal position
from time to time to loosen dust and dirt and then brush it off.
• Dust and dirt tend to be deposited in gaps in the back of the case or band.
Deposited dust and dirt may cause corrosion and soil your clothing. Clean the
watch occasionally.
Cleaning the Watch
• Use a soft cloth to wipe off dirt, perspiration and water from the case and
crystal.
• Use a soft, dry cloth to wipe off perspiration and dirt from the leather band.
• To clean a metal, plastic, or rubber watchband, wash away dirt with water.
Use a soft brush to remove dust and dirt jammed in the gaps in the metal
band.
NOTE: Avoid using solvents (thinner, benzine, etc.), as they may mar the finish.
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• Water-resistance for daily use (to 3 atmospheres): This type of watch is water-
resistant to minor exposure to water. For example, you may wear the watch
while washing your face; however, it is not designed for use underwater.
• Upgraded water-resistance for daily use (to 5 atmospheres): This type of
watch is water-resistant to moderate exposure to water. You may wear the
watch while swimming; however, it is not designed for use while skin diving.
• Upgraded water-resistance for daily use (to 10/20 atmospheres): This type of
watch may be used for skin diving; however, it is not designed for scuba or
saturated diving using helium gas.
CAUTION:
• Be sure to use the watch with the crown pressed in (normal position). If your
watch has a screw-type crown, be sure to tighten the crown completely.
• Do NOT operate the crown with wet fingers or when the watch is wet. Water
may enter the watch and compromise water-resistance.
• If the watch is used in seawater, rinse with fresh water afterward and wipe with
a dry cloth.
• If moisture has entered the watch, or if the inside of the crystal is fogged up
and does not become clear within a day, immediately take the watch to your
dealer or Citizen Service Center for repair. Leaving the watch in such a state
will allow corrosion to form inside.
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• Do NOT subject the watch to a strong shock such as dropping it onto a hard
floor.
• Avoid using the watch in an environment where it may be exposed to
chemicals or corrosive gases.
If solvents, such as thinner and benzine, or substances containing such
solvents come in contact with the watch, discoloration, melting, cracking, etc.
may result. If the watch comes in contact with mercury used in thermometers,
the case, band or other parts may become discolored.
Periodical inspections
Your watch requires inspection once every two or three years for safety and long
use.
To keep your watch water resistant, the packing needs to be replaced regularly.
Other parts are required to be inspected and replaced as necessary.
Ask for Citizen geuine parts during replacement.
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CAUTION: Operating environment
• Use the watch within the operating temperature range specified in the
instruction manual.
Using the watch where temperatures are outside the specified range may
result in deterioration of functions or even stoppage of the watch.
• Do NOT use the watch in places where it is exposed to high temperature,
such as in a sauna.
Doing so may result in a burn.
• Do NOT leave the watch in a place where it is exposed to high temperature,
such as the glove compartment or dash-board of a car.
Doing so may result in deterioration of the watch, such as deformation of
plastic parts.
• Do NOT place the watch close to a magnet.
Timekeeping will become inaccurate if you place the watch close to magnetic
health equipment such as a magnetic necklace, a magnetic latch of a
refrigerator door,handbag clasp or the earphone of a mobile phone. If this has
occurred, move the watch away from the magnet and reset the time.
• Do NOT place the watch close to household appliances that generate static
electricity.
Timekeeping may become inaccurate if the watch is exposed to strong static
electricity, such as is emitted from a TV screen.
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H. SPECIFICATIONS
1. Type: Analog Quartz watch
2. Caliber No.: B023
3. Accuracy: Within ±15sec/ month (within a normal
temperature range of +5。 C/41。 F to
+35。 C/95。 F)
4. Quartz oscillator frequency: 32,768Hz
5. IC: C/MOS-LSI (1 pc.)
6. Operating temperature range:
- 10。 C/14。 F to +60。 C/140。 F
7. Display features: Time: hour, minute, second
8. Additional features: Insufficient charge warning function
Time setting warning function
9. Continuous operating time: From fully charged to stop:
Approx. 1 year
From insufficient charge warning display to stop:
Approx. 2 weeks
10. Battery: Secondary battery
*Specifications are subject to change without prior notice.
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