Citizen JM0 Series User manual

INSTRUCTION MANUAL

1
English
Table of contents
Selecting basic functions ……………………………………… 2
Adjusting the analog display…………………………………… 3
Adjusting the digital time display …………………………… 4
Setting and using the alarm …………………………………… 6
Using the stopwatch …………………………………………… 7
Adjusting the calendar ………………………………………… 8
Setting the chime and sound monitor ………………………… 10
Battery replacement / Reset …………………………………… 11
Water resistance ………………………………………………… 12
Precautionary items and usage limitations ………………… 14
Specifications …………………………………………………… 20

A
M
S R A
2
Hours
Minutes
AM/PM Alarm set
mark
Chime set
mark
Alarm mode
mark
Stopwatch
mode mark
Crown
Minutes Minutes Minutes
Seconds Seconds
Hours Hours Hours Month
Date
Day
Press Mbutton to select functions.
Selecting basic functions
TIME CALENDARALARM STOPWATCH
Seconds
Calendar
mode mark

3
English
Crown
•Alarm, Stopwatch and calendar modes are indicated by each ashing mode
mark.
•Crown—Analog display set,
M— Mode change, Instant manual return
S— Selection, Reset, Split
R— Adjustment, Start, Stop, Alarm set, Illumination
★e Cal. C20* doesn't have any STOPWATCH or CALENDAR mode mark.
Pull out the crown one step and turn clockwise
or counterclockwise direction to adjust the
analog time display.
e seconds hand will start timekeeping
synchronizing with the digital time display
when the crown is returned to the original
position.
Adjusting the analog display
Selecting basic functions
A

A
M
S R AAA
4
1) Press
M
button
to set to the
normal TIME
display.
2) Press Suntil
SECONDS
start flashing.
3) Press Rto
set seconds
to "00".
4) Press Sfor
MINUTES
adjustment.
MINUTES start
flashing.
5) Press Rand
adjust the
minutes.
6) Press S
for Hours
adjustment.
HOURS start
flashing.
7) Press Rand
adjust the
hours.
Press Sto select the digit display, and press Rto adjust each display.
Adjusting the digital time display
TIME HOURSSECONDS MINUTES

5
English
8) Press Sfor 12/24
HOURS selection.
12/24 HOURS
start flashing.
9) Press Rand
select 12 or
24-HOUR display.
10) Press Sor
M
to finalize
adjustment.
The watch
returns to
the normal
TIME display.
•If the watch is le in the adjustment
mode for about 1 minute without
operating any buttons, AUTO
RETURN will activate to return to
the normal TIME display.
•If seconds adjustment is made
when the SECOND display is
showing 30-59 seconds, the
MINUTE display will automatically
advance to the next minute.
•INSTANT MANUAL RETURN to
the normal TIME display can be
made at any stage of adjustment by
pressing Mbutton.
•A and P marks display only under
the 12-hour time system.
Adjusting the digital time display
TIME12/24 HOURS

6
•e setting procedure of the ALARM time is the same as that of the TIME
display. Setting order is as follows: ALARM→HOURS→MINUTES
•e HOURS display will synchronize with the selection of 12 or 24-HOURS in
the TIME adjustment.
•If the watch is le in the adjustment mode for more than 1 minute without
operating any button, AUTO RETURN will activate to return to the normal
ALARM display.
•INSTANT MANUAL RETURN to the normal ALARM display can be made at
any stage of adjustment by pressing Mbutton.
•Press Rbutton in the normal ALARM mode to set "ON" or "OFF" the alarm.
e ALARM set mark ( ) will be indicated.
•ALARM sounds for 20 seconds at the ALARM set time. Alarm buzzer can be
ceased by pressing any button.
Setting and using the alarm

7
English
Stopwatch operation diagram
•Conrmation sound will be made each time Sor Rbutton is pressed in the
STOPWATCH mode.
•e SPLIT COUNTER mode will turn into the STOPWATCH COUNTER
mode when it is changed to the other mode while it is in operation.
•e TIMEKEEPING of the stopwatch will be turned o, if the ALARM buzzer
is stopped by pressing Sor Rbutton when the watch is in the STOPWATCH
COUNTER or SPLIT COUNTER mode.
While the split display is in use the SPLIT mark or S mark is displayed.
★SPLIT TIME measures the time elapsed aer starting the split time function.
•e stopwatch measurement capacity is 60 minutes, from 0 to 59' 59. 99"
Using the stopwatch
STP.W
S R
RESET STOPWATCH
COUNTER
STOPWATCH
STOP
SPLIT
COUNTER
SPLIT STOP
R
RR
S
SS

8
DATE
S R
M
DATE DATE DATE
1) Press
M
button
to set to the
normal CALENDAR
display.
2) Press Suntil
DATE starts
flashing.
3) Press R
and adjust
the date.
4) Press Sfor
MONTH
adjustment.
MONTH starts
flashing.
5) Press Rand
adjust the
month.
6) Press Sfor DAY
adjustment. DAY
starts flashing.
7) Press Rand
adjust the day.
8) Press Sor
M
to
finalize adjustment.
The watch returns
to the normal
CALENDAR display.
Adjusting the calendar
CALENDAR DAYDATE MONTH

9
English
•INSTANT MANUAL RETURN and AUTO RETURN system will activate in
the same manner as described in the TIME adjustment.
•If non-existent date is set, the CALENDAR display will show the 1st day of the
next month when returned to the normal display. (ex: February 31 → March 1)
•e CALENDAR function includes automatic month-end adjustment, but in
the leap year changeover from February to March must be made manually.
(e Cal C20*doesn't display the CALENDAR mode mark.)
Adjusting the calendar

10
•Press Sand Rbutton simultaneously in the normal TIME or normal
CALENDAR mode, the CHIME can be set "ON" or "OFF" each time the
buttons are pressed and the CHIME set mark will be indicated. e SOUND
MONITOR is conducted at the same time when the buttons are pressed.
Setting the chime and sound monitor
CHIME set mark

11
English
•Press the M, Sand Rbuttons simultaneously following battery replacement
operations to reset the watch. Failure to reset the watch aer battery
replacement will result in improper timekeeping.
•Pressing all three buttons simultaneously will cause the watch display to
highlight and a conrmation signal to sound indicating the reset operation is
complete.
Upon reset the watch displays will return to the following initial settings:
Time: AM 12:00.00
Alarm: AM 12:00.00 OFF
Stopwatch: 00:00.00
Calendar: Sunday January 1
Chime: OFF
Battery replacement / Reset

12
Water-related use
Minor exposure
to water (washing
face, rain, etc.)
Swimming and
general washing
work
Skin diving,
marine sports
Scuba diving
using an air tank
Operate the crown
or button when
the watch is wet
Name Indication Specification
Dial or Case back
Non-water resistant watch — Non-water resistant NO NO NO NO NO
Everyday-use water resistant
watch
WATER RESIST(ANT) Water resistant to
3 atmospheres OK NO NO NO NO
Upgraded everyday-use water
resistant watch
WATER RESIST(ANT)
5 bar
Water resistant to
5 atmospheres OK OK NO NO NO
WATER RESIST(ANT)
10/20 bar
Water resistant to
10 or 20 atmospheres OK OK OK NO NO
Water resistance
WARNING Water Resistance
• Refer to the watch dial and the case back for the indication of the water resistance of your
watch. The following chart provides examples of use for reference to ensure that your watch is used
properly. (The unit “1bar” is roughly equal to 1 atmosphere.)
• WATER RESIST(ANT) ××bar may also be indicated as W.R.××bar.
• Non-water resistant models are not designed to come into contact with any moisture. Take care not
to expose a watch with this rating to any type of moisture.

13
English
Water-related use
Minor exposure
to water (washing
face, rain, etc.)
Swimming and
general washing
work
Skin diving,
marine sports
Scuba diving
using an air tank
Operate the crown
or button when
the watch is wet
Name Indication Specification
Dial or Case back
Non-water resistant watch — Non-water resistant NO NO NO NO NO
Everyday-use water resistant
watch
WATER RESIST(ANT) Water resistant to
3 atmospheres OK NO NO NO NO
Upgraded everyday-use water
resistant watch
WATER RESIST(ANT)
5 bar
Water resistant to
5 atmospheres OK OK NO NO NO
WATER RESIST(ANT)
10/20 bar
Water resistant to
10 or 20 atmospheres OK OK OK NO NO
Water resistance
• Water resistance for daily use (to 3 atmospheres) means the watch is water resistant for
occasional accidental splashing.
• Upgraded water resistance for daily use (to 5 atmospheres) means that the watch may be worn while
swimming, but is not to worn while skin diving.
• Upgraded water resistance for daily use (to 10/20 atmospheres) means that the watch may be worn
while skin diving, but not while scuba or saturated diving using helium gas.

14
Precautionary items and usage limitations
CAUTION To Avoid Injury
• Be particularly careful when wearing your watch while holding a small child, to avoid injury.
• Be particularly careful when engaged in strenuous exercise or work, to avoid injury to yourself
and others.
• Do NOT wear your watch while in a sauna or other location where your watch may become
excessively hot, since there is the risk of burns.
• Be careful when putting on and taking off your watch, since there is a risk of damaging your
fingernails, depending on the manner in which the band is fastened.
• Take off your watch before going to bed.
CAUTION Precautions
• Always use the watch with the crown pushed in (normal position). If the crown is of the screw
lock-type, make sure it is securely locked.
• Do NOT operate the crown or any push buttons when the watch is wet. Water may enter the
watch causing damage to vital components.
• If water enters the watch or the watch fogs up and does not clear up even after a long time,
consult your dealer or Authorized Service Center for inspection and/or repair.

15
English
Precautionary items and usage limitations
• Even if your watch has a high level of water resistance, please be careful of the following.
• If your watch is immersed in sea water, rinse thoroughly with fresh water and wipe with a
dry cloth.
• Do not pour water from a tap directly onto your watch.
• Take off your watch before taking a bath.
• 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, push button,
etc.) may come off.
CAUTION When Wearing Your Watch
<Band>
• Leather, genuine skin and rubber (urethane) bands will deteriorate over time due to
perspiration, body oils and dirt. Be sure to replace the band periodically.
• The durability of a leather band may be affected when wet (fading, peeling of adhesive), owing
to the properties of the material. Moreover, wet leather may cause a rash.
• It is recommended to take off the watch if it gets wet, even if the watch itself is water resistant.

16
Precautionary items and usage limitations
• Do not wear the band too tightly. Try to leave enough space between the band and your skin to allow
adequate ventilation.
• The rubber (urethane) band may be stained by dyes or soil present in or on clothing or other
accessories. Since these stains may not be removable, caution is required when wearing your watch
with items that tend to easily transfer color (articles of clothing, purses, etc.). In addition, the band
may be deteriorated by solvents or moisture in the air. Replace with a new one when it has lost
elasticity or become cracked.
• Please request adjustment or repair of the band in the following cases:
• You notice an abnormality with the band due to corrosion.
• The pin of the band is protruding.
• We do not recommend attempting to adjust the watch band yourself. Special expertise and
experience is required for proper adjustment. If not adjusted correctly, the band may become
detached leading to loss of your watch. (Some retailers may supply a band adjustment tool with your
purchase).
For band adjustment, we recommend you consult the retailer from where the watch was purchased
or your nearest Authorized Citizen Service Center. Some repair shops may charge a nominal fee for
adjustment if the watch was not purchased directly from them.
<Temperature>
• The watch may stop or the function of the watch may be impaired in extremely high or low
temperature. Do not use the watch in places where the temperature is outside the operating
temperature range as stated in the specifications.

17
English
Precautionary items and usage limitations
<Magnetism>
• Analog quartz watches are powered by a step motor that uses a magnet. Subjecting the watch to
strong magnetism from the outside can cause the motor to operate improperly and prevent the watch
from keeping time accurately. Do not allow the watch to come into close proximity to magnetic
health devices (magnetic necklaces, magnetic elastic bands, etc.) or the magnets used in the latches
of refrigerator doors, clasps used in handbags, the speaker of a cell phone, electromagnetic cooking
devices and so on.
<Strong Shock>
• Avoid dropping the watch or subjecting it to other strong impact. It may cause malfunctions and/or
performance deterioration as well as damage to the case and bracelet.
<Static Electricity>
• The integrated circuits (IC) used in quartz watches are sensitive to static electricity. Please note the
watch may operate erratically or not at all if exposed to intense static electricity.
<Chemicals, Corrosive Gasses and Mercury>
• If paint thinner, benzene or other solvents or products containing these solvents (including gasoline,
nail-polish remover, cresol, bathroom cleaners and adhesives, water repellent, etc.)
are allowed to come into contact with the watch, they may discolor, dissolve or crack the materials.
Be careful when handling these chemicals. Contact with mercury such as that used
in thermometers may also cause discoloration of the band and case.

18
Precautionary items and usage limitations
<Protective Stickers>
• Be sure to remove any protective stickers that may be on your watch (case back, band, clasp, etc.).
Otherwise, perspiration or moisture may enter the gaps between the protective stickers and the parts,
which may result in a skin rash and/or corrosion of the metal parts.
CAUTION Always Keep Your Watch Clean
• Rotate the crown while it is pressed in fully and press the buttons periodically so they do not become
stuck due to accumulations of foreign matter.
• The case and band of the watch come into direct contact with the skin in the same manner as
undergarments. Corrosion of the metal or unnoticed soiling such as that caused by perspiration and
dirt can soil sleeves and other portions of clothing. Keep your watch clean at all times.
• The case and band of the watch come into direct contact with the skin. If you think there is something
wrong, discontinue wearing the watch immediately and consult your physician.
In the case of accumulation of sweat or dirt on a metal band or case, clean thoroughly using
a brush and neutral detergent. In the case of a leather band, wipe clean using a dry cloth.
• Leather bands may become discolored by perspiration or dirt. Always keep your leather band clean
by wiping with a dry cloth.

19
English
Precautionary items and usage limitations
Caring for Your Watch
• Wipe any dirt or moisture such as perspiration from the case and crystal with a soft cloth.
• For a metallic, plastic or rubber (urethane) watchband, wash any dirt off with water. Remove the
small amounts of dirt trapped between the crevices of the metallic band with a soft brush.
• For a leather band, wipe off dirt using a dry cloth.
• If you will not be using your watch for an extended period of time, carefully wipe off any
perspiration, dirt or moisture and store in a proper location, avoiding locations subject to excessively
high or low temperatures and high humidity.
<When Luminous Paint is used for your watch>
The paint on the dial and hands helps you with reading the time in a dark place. The luminous
paint stores light (daylight or artificial light) and glows in a dark place.
It is free from any radioactive substance or any other material harmful to a human body or
environment.
• The light emission gradually becomes weaker as time passes.
• The duration of the light (“glow”) will vary depending on the brightness, types of and
distance from a light source, exposure time, and the amount of the paint.
• The paint may not glow and/or may dissipate quickly if exposure to light was not sufficient.