1
English
The date window—
large and highly visible
The calendar—no date correction
at the end of months (→ page 13)
Solar-powered and no battery
replacement (→ page 9)
Features
2
Table of contents
Part names and their main functions .............................................................. 4
How to use the screw down crown ...................................................................... 5
When leaving the watch unused for an extended period of time .................... 5
Charging the battery .......................................................................................... 6
Charging the battery .............................................................................................. 6
When the battery becomes short of power
—Insufficient charge warning function ........................................................... 7
Charging time ......................................................................................................... 8
After the battery is fully charged
—Overcharge prevention function ................................................................... 9
Eco-Drive ................................................................................................................ 9
Setting the time ................................................................................................. 10
Checking the date, month, and year ............................................................. 12
Perpetual calendar ................................................................................................ 13
Setting the year, month, and date ................................................................. 14
Precautions ......................................................................................................... 22
3
English
• The second hand moves only once every two seconds.
• All hands stop moving.
• The figures are not displayed upright.
• The date is wrong.
• The date changes to the following day at around noon.
• The watch does not work properly.
• The watch does not move even if the battery is fully charged.
Troubleshooting ..............................................................................................30
Checking and correcting the reference position ......................................... 32
Resetting the watch .......................................................................................... 36
Maintenance ....................................................................................................... 38
Specifications ..................................................................................................... 39
4
Button A:
For setting the date etc.
Part names and their main functions
The illustrations in this instruction manual may differ from the actual appearance of your watch.
Hour hand
Minute hand
Button B:
For setting the
calendar-related functions
Crown:
For setting the time, checking
the date, etc.
Press HERE.
Example of a button
Date
24-hour hand:
Goes around once
a day
Second hand
5
English
7 How to use the screw down crown
To rele ase the crown
7 When leaving the watch unused for an extended period of time
Pull out the crown to position
.
All hands stop moving and the battery power is
saved.
• The date will change to the following day every
24 hours once you have pulled out the crown to
position
.
Tu rn the crown to the left until it pops out slightly.
To lo ck again
Tighten the crown completely by pressing and turning
it to right.
6
Charging the battery
7 Charging the battery
This watch has a battery which is charged by exposing the dial to light such as
direct sunlight or fluorescent lamps.
To obtain the best performance:
• Expose the dial to direct sunlight at least once a month.
• After taking off the watch, put it where the dial is exposed to bright light,
such as by a window.
• Before storing the watch in a dark place for an extended period of time, fully
charge the battery.
When the watch is covered with long sleeves, for example, the battery may not
be charged sufficiently. Try to keep the watch exposed to light.
Do not charge the battery at a high temperature (about 60˚C/140˚F or
higher).
7
English
7 When the battery becomes short of power—Insufficient charge
warning function
• After the battery is charged for a while, the
second hand will move normally.
• If you have not charged the battery for three
days or more since the warning movement
began, the battery will run out and the watch
will stop.
When the battery becomes short of power, the second hand moves once
every two seconds—insufficient charge warning function. Charge the
battery by exposing the dial to light.
NOTICE:
You c ann ot check or adjust the settings while
the warning movement continues, though
you can see the time.
The two-second
interval movement
8
7 Charging time
Below are the approximate values when exposing to the light continuously.
The charging time differs depending on the color of dial or other conditions.
Use the table below only for your reference.
Illuminance
(Lx)
Environment
Charging time to
work for one day
(approx.)
Charging time to start
working normally when the
battery is empty (approx.)
500 Interior lighting 4 hours 60 hours
1,000
60-70 cm (24-28 in.) under a
fluorescent lamp (30 W)
2 hours 25 hours
3,000
20 cm (8 in.) under a fluorescent
lamp (30 W)
40 minutes 7.5 hours
10,000 Under cloudy weather 11 minutes 2.5 hours
100,000 Under direct sunlight in summer 2 minutes 45 minutes
Battery duration after full charging (without further charging) About 12 months
Charging the battery
9
English
This watch has the ”Eco-Drive” system, which
converts light into electrical energy with the solar cell
beneath the dial.
The system makes you free from care of battery
replacement and is environment-friendly because of
no battery disposal.
Time for charging fully
when the battery is
empty (approx.)
—
—
—
70 hours
35 hours
7 After the battery is fully charged—
Overcharge prevention function
After the battery is fully charged, charging
automatically stops to prevent overcharging, which
may damage to the battery, or affect the accuracy,
functions, and performance of the watch.
Eco-Drive
10
1. Pull out the crown to position .
All hands stop moving.
• To set the time accurately, pull out the
crown when the second hand is at the
0-second position.
Setting the time
Date window
24-hour hand
Second hand
11
English
2. Tu rn the crown to set the time.
All hands other than the second hand will move.
• Take care of the position of the 24-hour hand to set A.M. or
P.M. correctly.
• When you set the hands to around midnight, the date will
change to the following day. To return to the previous day, set
the hands to any position before 23:30.
Go to step 3 after the date has completely stopped.
3. Push in the crown to position .
The watch starts moving.
• To set the time accurately, push in the crown by the time signal.
12
The crown
position
The button
operation
To check a
date
—
To check a
month
—
To check an
year
Pressing
button A*
2
Checking the date, month, and year
Button
A
*1 This watch shows the number of years passed since the last leap year.
*
2
Each time you press button A while the crown is set to position , you can display
the month and year alternately.
Date window
You can check the date, month, and year*1.
13
English
Display examples of the date window
When checking a date
Ex. 5th day
When checking a month
Ex. February
• “M” stands for Month.
When checking an year
Ex. Next year of a leap year
• “L.Y.” stands for Leap Year.
The date is automatically adjusted until February 28, 2100.
So you do not need to correct it at the end of months.
Perpetual calendar
The figures in the date window change slowly.
14
The calendar setting has the following stages:
Enter the setting mode
(→ page 15)
Set the year
(→ page 16)
Set the month
(→ page 18)
Set the date
(→ page 20)
Setting the year, month, and date
Before setting:
• You cannot go back to the previous setting.
• You cannot go to the next step while the figures in the date window are moving.
• To stop setting, change the position of the crown. In this case, the settings you have
made are cleared.
NOTICE:
Do not operate between 23:00 and 0:30; otherwise, the date may not change even if the
24-hour hand moves past midnight.
15
English
1. Enter the setting mode
1-1. Pull out the crown to position .
The month appears in the date window.
1-2. Press and hold button
B
until the
figures in the date window start
moving.
The figures in the date window change slowly.
Go to the next page
The figures in the date window move slightly
up and down or right and left, or change to
tell you that you can do the next operation.
Date window
Button
B
16
2. Set the year
Button
A
Quick reference chart for number of years
passed since leap year
Year Passed year Year Passed year
2004 Leap year 2008 Leap year
2005 One year 2009 One year
2006 Two years 2010 Two years
2007 Three years 2011 Three years
Date window
Setting the year, month, and date
Button
B
Set the number of years passed since the last leap year.
17
English
Go to the next page
Ex. Setting value Window
When the current
year is a leap year
0
When two years
have passed
2
2-1. Press button
A
repeatedly to set
the year.
2-2. Press button
B
.
Now you can set the month.
18
3. Set the month
Button
B
Button
A
Date window
Setting the year, month, and date
Set the month—tens digit, then ones digit.
19
English
3-2. Press button
B
.
Now you can set the ones digit.
3-3. Press button
A
repeatedly to set
the ones digit of the month.
3-1. Press button
A
to set the tens digit
of the month.
Month Setting value Window
From January
to September
M0
From October
to December
M1
Ex. Setting value Window
September 9
November 1
Go to the next page
3-4. Press button
B
.
Now you can set the date.
20
Button
B
Button
A
4. Set the date
The selectable date differs
depending on the year and
month you have set.
Date window
Setting the year, month, and date
Set the date—tens digit, then ones digit.
21
English
4-1. Press button
A
repeatedly to set the
tens digit of the date.
4-2. Press button
B
.
Now you can set the ones digit.
4-3. Press button
A
repeatedly to set the
ones digit of the date.
Ex. Setting value Window
5th day 0
30th day 3
Ex. Setting value Window
5th day 5
30th day 0
5. Finish the setting
Push in the crown to position
.
The settings are stored.
22
WARNINGS
Handling the secondary battery
• Do not remove the battery. When it is required, keep the battery out of the reach of
children to prevent them from swallowing it.
• If the battery is swallowed, consult a doctor and seek medical treatment.
Precautions
23
English
CAUTIONS
Cautions about charging
• Excessively high temperature at charging battery may cause discoloration and
deformation of the exterior, and malfunction of the movement.
• Do not charge the battery at a high temperature (about 60˚C/140˚F or higher).
Examples:
– charging the battery by light such as an incandescent lamp or halogen lamp
– charging the battery where the temperature becomes extremely high—such as on the
dashboard
24
Precautions
To avoid injury
• DO NOT wear the watch where the temperature becomes extremely high—such as in a
sauna. Otherwise the watch may become hot and cause skin burn.
To avoid malfunction
• DO NOT use the watch where the temperature is lower or higher than the operation
temperature specified in the instruction manual. Doing so may cause the watch to
malfunction or stop.
• DO NOT place the watch nearby any materials generating a strong magnetic field such
as below:
– magnetic health equipment such as a magnetic necklace
– a magnetic latch of a refrigerator door
– a magnetic clasp on a handbag
– speakers of a mobile phone
– electromagnetic cooking devices
They may interfere with the movement of the stepping motors in the watch and
timekeeping becomes inaccurate.
25
English
• DO NOT place the watch nearby the household appliances generating static electricity.
Timekeeping may become inaccurate if the watch is exposed to such strong static
electricity that which is emitted from a TV screen.
• DO NOT apply any strong shock, for example, by dropping it onto a hard floor.
• Avoid using the watch 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, discoloration, melting, cracking, etc. may occur. The case, band,
or other parts may become discolored if the watch comes in contact with mercury as
that used in thermometers.
26
Indication
Specifications
Dial Case (case back)
WATER RESIST(ANT) or
no indication
WATER RESIST(ANT) Water-resistant to 3 atmospheres
WR 50 or WATER
RESIST 50
WATER RESIST(ANT) 5bar or WATER
RESIST(ANT)
Water-resistant to 5 atmospheres
WR 100/200 or WATER
RESIST 100/200
WATER RESIST(ANT) 10bar/20bar or
WATER RESIST(ANT)
Water-resistant to 10 or 20
atmospheres
Precautions
WARNINGS
Water-resistance performance
Before use, confirm the water-resistance level of your watch indicated on the dial and
case.
27
English
Examples of use
Minor exposure
to water (washing
face, rain, etc.)
Moderate exposure to
water (washing, kitchen
work, swimming, etc.)
Marine sports
(skin diving)
Scuba diving
(with an air
tank)
Operation of the
crown when the
watch is wet
OK NO NO NO NO
OK OK NO NO NO
OK OK OK NO NO
Go to the next page
The unit “bar” is roughly equal to 1 atmosphere.
*
“WATER RESIST(ANT) xx bar” may also be indicated as “W.R. xx bar.”
28
• Water-resistance for daily use (up to 3 atmospheres):
This type of watch is resistant to minor exposure to water. For example, you may wear
the watch while washing your face; however, it is not designed to be used underwater.
• Upgraded water-resistance for daily use (up to 5 atmospheres):
This type of watch is resistant to moderate exposure to water. You may wear the watch
while swimming; however, it is not designed to be used for skin diving.
• Upgraded water-resistance for daily use (up to 10/20 atmospheres):
This type of watch may be used for skin diving; however, it is not designed to be used
for scuba or saturated diving using helium gas.
• Be sure to use the watch with the crown pressed in fully (normal position). If the crown
of your watch is the screw down crown, be sure to tighten it completely.
• DO NOT operate the crown or buttons with wet fingers or when the watch is wet.
Wate r may penetrate the watch and compromise water-resistance.
Precautions
29
English
• If water has penetrated the watch, or if the inside of the glass is fogged up and does not
become clear in a day, take the watch to your dealer or Citizen Service Center for repair.
Leaving the watch in such a state will rust the internal parts and cause malfunction.
• If seawater penetrates the watch, place the watch in a box or plastic bag and
immediately take it in for repair. Otherwise, the pressure inside the watch will increase,
and parts (glass, crown, buttons, etc.) may come off.
• If the watch is used in seawater, rinse with fresh water afterward and wipe with a dry
cloth.
Keep your watch clean
• Keep your watch clean to prevent rust or dirt on the watch. They may stain your
clothes.
• Wipe off dirt on the leather band with a soft and dry cloth to prevent it from
discoloring.
30
If you have a problem with your watch, check the table below for a possible
solution before calling for service.
Troubleshooting
Symptoms Remedies
Reference
page
The hands do not work properly
The second hand moves only
once every two seconds.
Charge the battery.
7
All hands stop moving.
Push in the crown to position
.
10
Charge the battery.
6
The date display is not correct
The figures are not displayed
upright.
Check and correct the reference position.
32
The date is wrong. Set the year, month, and date correctly.
14
The date changes to the
following day at around noon.
Check if the 24-hour hand indicates the
correct time.
10
31
English
Symptoms Remedies
Reference
page
Others
The watch does not work
properly even if you have tried
the remedies on page 30.
Reset the watch, then adjust the
reference position.
36
The watch does not move even
if the battery is fully charged.
Contact the Citizen Service Center or the
store where you purchased your watch.
–
32
Checking and correcting the reference position
1. Check the current reference position
The figures of the date window rotate referring to the “0” position as the
initial position. If the “0” position, the reference position, has moved off
because of shock or other reasons, the figures are not displayed upright.
Correct the reference position following the procedure below when the figures
are not displayed upright.
Date window
1-1. Set the crown to position .
Button
B
33
English
1-2. Press and hold button
B
until the figures start moving to show the
current reference position.
Check the current reference position after the figures have stopped moving.
Position of figures The status of the reference position
“0”s of both digits are
shown upright.
The reference position is correct.
Go to step 1-3.
Other than above
Ex.
The reference position is wrong.
Go to step 2-1 to correct it (→ page 34).
• Follow step 2-1 within two minutes.
1-3. Press button
B
to finish the procedure.
The current date will appear in the date window.
• The current date will also appear in the date window if no operation is done for
about two minutes after step 1-2.
Go to the next page
34
2. Correct the reference position
2-1. Pull out the crown to position .
You c an correct the tens digit of the
reference position.
Button
A
Checking and correcting the reference position
Date window
Button
B
The figures in the date window move slightly
up and down or right and left, or change to
tell you that you can do the next operation.
35
English
2-2. Press button
A
repeatedly to display
the “0” upright.
Each time you press the button, the “0” moves
step by step.
• When you press and hold button A, the “0”
moves seamlessly.
2-3. Press button
B
to advance to the ones digit setting.
Each time you press the button, you can select the tens digit and ones digit
alternately.
2-4. Repeat step 2-2 to correct the ones digit
of the reference position.
3. Finish the correction
Push in the crown to position
.
The settings are stored and the current date will appear in the date window.
36
The watch may not work properly if it is affected by static electricity or shock.
In this case, reset the watch, then adjust the reference position and set the
time, year, month, and date again.
Resetting the watch
1. Pull out the crown to position .
All hands stop moving.
Button
A
Date window
Button
B
37
English
2. Press buttons
A
and B at the same time.
The reference position and the calendar are reset.
• When the reset is performed, the figures in the date window move slightly up and
down or right and left to tell you that the operation has been completed.
3. Set the reference position.
Follow the procedure from step 2-2 to 2-4 on page 35.
4. Push in the crown to position .
The settings are stored and “01” appears in the date window.
The calendar is set to “January 1st of a leap year.” To set the time, year, month, and
date again, refer to “Setting the time” (→ page 10) and “Setting the year, month, and
date” (→ page 14).
38
Maintenance
Daily maintenance
• Rotate the crown while it is pressed in (position ) and press the buttons periodically
so that they will not be rusty.
• Wipe off dirt, perspiration, and water from the case and glass with a soft cloth.
• To clean a metal, plastic, or rubber watchband, wash away dirt with water. Use a soft
brush to remove dust and dirt stuck in the gaps in a metal band.
• Do not use solvents (thinner, benzine, etc.), as they may damage the finish.
Periodical inspections
Yo ur watch needs an inspection once every two or three years for safety and longer usage.
To keep your watch water-resistant, the packing needs to be replaced regularly.
Other parts need to be inspected and replaced if necessary.
Ask for genuine Citizen parts upon replacement.
39
English
Model
E31*
Type Analog solar-powered watch
Timekeeping accuracy Within ±15 seconds per month on average (when worn at
normal temperatures between 5˚C/41˚F and 35˚C/95˚F)
Operating temperature range –10˚C/14˚F to +60˚C/140˚F
Display functions • Time: 24 hours, hours, minutes, seconds
• Calendar: Years passed since the last leap year, Month,
Date
Additional functions • Perpetual calendar (until February 28, 2100)
• Overcharge prevention function
• Insufficient charge warning function
Battery duration without
recharging
• Fully charged to empty: Approx. 12 months
• Two second interval movement to stop: Approx. 3 days
Battery Secondary battery, 1pc.
Specifications are subject to change without prior notice.
Specifications
40
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