Citizen QUARTZ Eco-Drive CTZ-B6902 User manual

CITIZEN QUARTZ
Eco-Drive
Model No. BJ1XXX
Cal. No. A16❈
Model No. EP2XXX
Cal. No. A27❈
•INSTRUCTION MANUAL
CTZ-B6902
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.
See “F. TIME FOR CHARGING” for charging
time reference.
A secondary battery is used in this watch to store
electrical energy. This secondary battery is a clean
battery which doesn’t use any toxic substances
such as mercury. Once fully charged, the watch
will continue to run for about 16 months without
further charging.
To use this watch comfortably, make sure that the
watch is always recharged before it stops.
There is no concern for overcharging this watch
(Overcharging Prevention Function is included).
We recommend that you recharge the watch
everyday.
B. SETTING THE TIME AND CALENDAR
1. Models without date supply
Setting the time
1. Stop the second hand at the 0 second position
by pulling out the crown.
2. Turn the crown to set the time.
3. After setting the time, firmly push the crown back
into its normal position.
2. Models with date display
 Setting the time
1. Stop the second hand at 0 second position by
pulling the crown out to the 2nd click.
2. Turn the crown to the time.
3. After setting the time firmly push the crown back
to its normal position.
 Setting the calendar
Adjusting the date
1. Pull the crown out to the first click.
2. Set the desired date by turning the crown.
• Do not adjust the date when the watch display is
reading between 9:00pm and 1:00am, otherwise
the date might not change on the following day.
3. After you have set the calendar, be sure to firmly
return the crown to its normal position.
C. FUNCTIONS OF SOLAR POWERED WATCH
If the charge becomes insufficient, a warning function will operate and the display changes,
as below.

C. FUNCTIONS OF SOLAR POWERED WATCH
■ Insufficient Charge Warning Function
The second hand changes to a
two second interval movement to
indicate insufficient charging.
Even in such a case, the watch
keeps correct time, but about 20
days after the two second
movement begins, the watch will
stop. After exposing the watch to
light, recharging takes place and the
watch returns to one second interval movement.
■ Quick Start Function
The watch will stop if it is completely discharged.
It will begin to operate soon after it is exposed
to light. (However, the time to start may vary
according to the brightness of the light.)
■ Time Setting Warning Function
If the watch stops, subsequent
exposure to light allows the Quick
Start Function to start again, and the
second hand moves with a hitch to
indicate that the time is incorrect.
■ 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.
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 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.
F. TIME REQUIRED FOR CHARGING
The time required for charging may vary according
to the caliber number, design (colour of the dial,
etc) and operating environment. The following table
will serve as a rough reference.
*The recharging time is the time when the watch is
continuously exposed to radiation.
Please check the caliber number on the caseback
Full recharging time (Empty to full)...
The time for fully recharge from stopped.
One day usage...
The time required for the watch to run for one day
with one second interval movement.
500
Illuminance
(lux) Environment
Inside and ordinary
office 12 days 2 hours 55 days
From the stop state to
one second movement One day usage Empty to full
1000 60-70cm under a
fluorescent light 6 days 1 hour 27 days
3000 20cm under a
fluorescent light 30W 46 hours 20 minutes 9 days
10000 Exterior, cloudy 14 hours 6 minutes 64 hours
100000 Exterior, summer,
sunny
4 hours 30
minutes 2 minutes 22 hours
Cal No. A160
Time required
500
Illuminance
(lux) Environment
Inside and ordinary
office 19 days 3 hours 85 days
From the stop state to
one second movement One day usage Empty to full
1000 60-70cm under a
fluorescent light 30W 9 days 1.5 hour 41 days
3000 20cm under a
fluorescent light 30W 70 hours 30 minutes 14 days
10000 Exterior, cloudy 21 hours 9 minutes 96 hours
100000 Exterior, summer,
sunny 7 hours 3 minutes 32 hours
Cal No. A270
Time required

G. IN THESE CASES
If the watch warns that the energy
is running short.
The second hand starts moving at two
second intervals in order to warn that
the watch will stop functioning after
about 20 days. (Insufficient Charge
Warning Function)
In such a case, expose your watch to
light for a while to cancel the warning. (The second
hand returns to moving at one second intervals
when the energy is recharged.) If the watch is left
short of energy, it will stop functioning after 20 days
or so.
If the watch warns you to set the time.
When the watch that has stopped is
exposed to light, the second hand
starts the hitch movement. (Quick
Start Function)
The time elapsed before the second
hand starts moving depends on the
illuminance of the light. Even so, the second hand
continues the hitch movement to tell you that the
watch indicates an incorrect time because it has
stopped. (Time Setting Warning function)
In such a case, set the hands to the correct time.
* If the watch is insufficiently exposed to light, the
second hand will soon switch to moving at two
second intervals in order to warn that the energy is
running short.
H. PRECAUTIONS
CAUTION: Water-resistance performance
There are several types of water-resistant watches,
as shown in the following table. 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.
• 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 the inside of
the crystal has fogged up and does not become
clear within a day, immediately take the watch to
your dealer or Citizen Service Centre for repair.
Leaving the watch in such a state will allow
corrosion to form inside.
• 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 all 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 the dirt with mild soap and water.
Use a soft brush to remove dust and dirt jammed
in the gaps in the metal band. If your watch is not
water-resistant, take it to your dealer.
NOTE: Avoid using solvents (thinner, benzine, etc.)
as they may mar the finish.
CAUTION: Operating environment.
• Use the watch within the operating temperature
range specified in the instruction manual.
Using the watch where the 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 skin burn.
• Do NOT leave the watch in a place where it is
exposed to high temperature, such as in the glove
compartment or dashboard of a car.
Doing so may result in deterioration of the watch,
such as deformation of the plastic parts.
• Do NOT place the watch close to a magnet.
Timekeeping will become inaccurate if you place
the watch too close to magnetic health equipment
such as a magnetic necklace or a magnetic latch
of a refrigerator door or 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
emitted from a TV screen.
• 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 or benzine, or
substances containing such solvents come in
contact with the watch, discolouration, melting,
cracking, etc. may result. If the watch comes into
contact with mercury used in thermometers, the
case, band or other parts may become discoloured.
I. SPECIFICATIONS
1. Type Analogue Quartz with
3 Hands
2. Caliber No. A16❈/A27❈
3. Accuracy Within 15sec/month
(within a normal temp
range of 5°C/41°F to
35°C/95°F)
4. Quartz oscillator frequency 32,768Hz
5. IC: C/MOS-LSI (1pc.)
6. Operational Temp Range -10°C/14°F ~
+60°C/140°F
7. Display Features Time, hour, minute,
second. Calendar: date
(models with date
display)
8. Additional Features Insufficient charge
warning
Quick start
Time setting warning
Overcharge Prevention
9. Contiuous operating time Approx. 16 months
(from full charge to
stop)
Approx. 20 days (from
2 second interval
movement stop)
10. Battery Secondary battery
* Specifications are subject to change without prior
notice.