Citizen 2502 User manual

ENGLISH
FRANÇAIS
ESPAÑOL
DEUTSCH
ITALIANO
PORTUGUÊS
中文（繁体字）

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English
CONTENTS
A. BEFORE USING ..........................................................................................2
B. SPECIAL FEATURES OF YOUR WATCH .................................................2
C. SETTING THE WATCH ...............................................................................4
1. Setting the time ......................................................................................5
2. Setting the calendar ...............................................................................5
D. HOW TO USE REGISTER RING .................................................................6
E. NO DECOMPRESSION LIMITS TABLE .....................................................8
F. CARE OF YOUR WATCH .........................................................................10
G. BATTERY REPLACEMENT ......................................................................17
H. AFTER SALES SERVICE OF PROFESSIONAL DIVER’S WATCH ........19
I. SPECIFICATIONS .....................................................................................20

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A. BEFORE USING
Confirm the caliber number of your watch by the stamp on its case back. This
instruction manual explains how to use calibers 2502, 5502, 5503, 5512, 6008
and 6018.
B. SPECIAL FEATURES OF YOUR WATCH
This instruction book is written for the 200m water resistant divers watch
(Caliber 2502, 5502, 5512, 6008, 6018) and 800m water resistant professional
diver’s watch (Caliber 5503).
*Example
2502-xxxx
Caliber number
[Case back]

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These watches have the following special features.
1. The register ring which is very important for checking diving time, has the
added function that prevents it from being rotated in the counterclockwise
direction to make it much safer. A register ring that can not be turned in the
counterclockwise direction.
2. The screwlock type crown with double O-ring.
The crown is a screwlock type which uses a double O-ring type with 3 water
resistant packings to improve airtightness and water resistance.
3. The “No decompression limits table” imprinted on the wrist band (There are
some models without this table) to enable divers to dive safely.
The “No decompression limits table” is indicated on the wrist band to enable
divers to dive safely.
4. Helium gas insulation for professional divers watch (Caliber 5503).
The ability to withstand the pressures of saturated diving using helium gas has
been increased.
By using a strong hard screw type fixed glass ring, the watch is safe even on
the off chance that helium gas penetrates the seals.
* The specification of each caliber, can be found in section “I. Specifications”.

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C. SETTING THE WATCH
According to the model, the crown maybe positioned differently from the
illustrations shown, however the operation is the same. So please use this
instruction booklet a corresponding way.
* The crown of this watch is of screwlock type and must first be turned
counterclockwise to loosen it.
* Do not operate the crown in water or while the watch is wet.
Crown
Crown Step 2
Crown Step 1
(Calendar Setting)
Date
Setting
Day
Setting
(Time Setting)

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1. Setting the Time
a. To stop the second hand, wait until second hand is on “0” sec, then pull out
crown to position (2).
b. Turn the crown to set the minute/hour hands to the desired time.
c. To start the second hand, push the crown back to position (0).
2. Setting the Calendar
a. Pull out the crown to position (1).
b. Turn the crown clockwise until the desired day of the week appears.
Turn the crown counterclockwise until the desired date appears.
* Do not set the date and day between 9:00 PM and 4:00 AM otherwise the
date and day may not change properly.
After the time and calendar have been set, be sure to push the crown to the
position (0) and lock it by screwing.

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D. HOW TO USE REGISTER RING
The register ring is a convenient way to keep track of diving time, permitting the
indication of the elapsed and remaining times.
* Turn the register ring counterclockwise, while pushing it. It is locked under
normal conditions to prevent free rotation, and can not be turned in the
reverse direction for safety reasons.
* Determination of elapsed time: Preset the mark on the register ring to the
minute hand, and the elapsed time can be shown by the register ring scale.
* Determination of remaining time: Preset the mark on the register ring to a
certain required time, and the remaining time can be read with the ring scale.

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The register ring can be used for various other activities besides diving, for
example parking, walking, and keeping track of the remaining time before
departing or before meeting a friend, or however you like.
Elapsed time: shows that
10 minutes have passed
since 9:10
Remaining time: shows
that 20 minutes remain
until 9:25
Elapsed time Remaining time

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E. NO DECOMPRESSION LIMITS TABLE
The range of time when it is unnecessary to stop to decompress while
surfacing from a dive is determined by the depth and time of the dive.
These values are referred to as “No Decompression Limits.” Use these as
estimates when diving.

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No Decompression Limits, based on the American Navy Diving Manual (1983),
are printed on the band of this watch. (Some models may not have this chart.)
<Reading the chart>
DEPTH. m - -N.D. TIME
12 m -------200 Min.
15 m -------100 Min.
18 m --------60 Min.
21 m --------50 Min.
24 m --------40 Min.
27 m --------30 Min.
30 m --------25 Min.
33 m --------20 Min.
36 m --------15 Min.
39 m --------10 Min.
42 m --------10 Min.
45 m ---------5 Min.
Caution: The no decompression limit is
different depending on body condition,
or personal differences. Please use the
no decompression limits on this watch
as a guideline.
When a dive requires no decompression
limits make sure you follow a specialized
divers manual.
Example: If the diver is at 21 meters for
50 minutes or less, then it is OK to
surface without stopping to decompress.

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F. CARE OF YOUR WATCH
1. Water resistant......Confirm the degree of water resistance of your watch by the
The crown must be pushed in at all times. Also on screwlock
Indication
WATER
RESIST***
WATER
RESISTANT
200m
Water resistant
for diving
Water resistant
for professional
diving
WATER
RESISTANT
800m
PROFESSIONAL
SATURATION
***OR PROFESSIONAL DIVER’S
WATER RESIST
(ANT)
WATER
RESIST
(ANT)
OK
OK
Dial Case back
Against occasional
water drop to which
it may be temporarily
subjected.
Water-related use
• Donotoperatethe
crown in the water or
while the watch is wet.

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case back and dial. and refer to the following table for the use of your watch.
type crowns, screw should be tightened completely.
Using it during
kitchen work,
swimming, washing a
car, boating or water
skiing.
Using it while scuba
diving.
Using it while skin
diving.
Using it in a saturated
diving (helium gas)
environment such as
used for professional
diving.
pulling out the crown
when the watch is
wet.
OK OK OK NO NO
OK OK OK OK NO
Water-related use

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• Cloudingofglass
Since there is some moisture in a watch, if outside temperature is lower than
inside the watch, the glass may get fogged. If the fog clears soon, it is not a
problem. If it does not clear soon, however, have it checked immediately.
2. Protective Packings
• Packingsincorporatedinthiswatch(foritscaseback,crownandglass)
prevent entering of water, dust and other foreign matters into the watch to
protect its functions. Periodical replacement of these packings (every 2 years
approximately) is recommended since they may become subject to brittleness
and/or their elasticity may decrease after long-time use.
3. Use for diving
Be sure to check the following points when you use this watch for diving.
a. Before diving
• Isn’titatimetoreplacethepowercell?
• Thetimehasbeenpropertyset.
• Thecrownisproperlyinlockposition.
• Theregisterringproperlyrotatescounterclockwise.Itdoesnotrotate
clockwise (never force to rotate it at this time).

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• Therearenoscratchesinthewristbandandnocracksnorchippedportions
in the glass of the watch. Also, the wrist band should be fastened tightly to the
watch case.
b. While diving
• Neveroperatethecrowninwater.
• Becarefulnottohitthewatchagainstarockorequipment.
c. After diving
• Washthewatchwithfreshwatertopreventrustformationduetoseawater.
• Wipeoffwaterdropletsadheringtothewatchafterwashing.
Watch Band
• Ifthewatchbandshowscracks,replaceitwithanewband.
• Whenreplacingthewatchband,alsoreplacethespringbarsconnectingthe
watch and the band.
Temperature
Avoid exposing the watch to direct sunlight or leaving it in extremely hot or cold
locations for a long period of time.
• Thiswillcausemalfunctioningandshortenthelifeofthebattery.
• Thismaycauseyourwatchtogainorlosetimeandaffectitsotherfunctions.

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Shock
• Thiswatchwillwithstandthebumpsandjarsnomallyincurredindailyuseand
while playing such non-contact sports as golf and catchball.
• Droppingthewatchonthefloororotherwiseimpartingsevereshocktoitmay
cause malfunctioning or damage.
Magnetic Fields
This watch is antimagnetic up to 60 gauss and not affected by the magnetic
fields produced by ordinary household electric appliances. If used in the
immediate vicinity of strong magnetism, however, the watch’s functions may
temporarily be affected.
Static Electricity
The integrated circuits used in the watch are sensitive to static electricity. If
exposed to intense static electricity, the watch’s display may lose its accuracy.

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Chemicals and Gases
Avoid wearing the watch in the presence of strong chemicals or gases. If the
watch comes in contact with such solvents as thinner and benzine or products
containing materials such as gasoline, polish, detergent or adhesive, its
components may discolor, dissolve, or crack. Be especially careful to avoid
chemicals. The watchcase or band may discolor if they come in contact with
mercury from a broken thermometer or other equipment.
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.

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Safekeeping
If you do not use the watch for an extended period of time, wipe off perspiration,
soil and moisture thoroughly and keep it in a place not exposed to extremely
high or low temperatures or high humidity. Don’t leave a dead battery in the
watch for a long time and be sure to replace it with new one. If battery fluid leaks
out, it may damage movement components.
Keep Your Watch Clean
Wipe off soil and moisture from the glass with a soft, absorbent cloth. If you
wear the watch when the back side of the case and watchband is soiled, they
may cause a skin rash as they come in direct contact with your skin. Keep your
watch clean also to avoid staining your cuffs.
How to clean the watchband:
• Metalband
Wash soiled parts with a tooth brush in mild, soapy water.
• Plasticorrubberband
Wash in water. Do not use solvent.
• Leatherband
Rub lightly on the front side with a soft, dry cloth. Use a cloth moisturized with
alcohol to clean the under side.

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G. BATTERY REPLACEMENT
1. Life of Initial Battery
The battery installed in the watch before your purchase has been used for
monitoring the watch’s functions and performance. Please note that it’s life
may run out before the span of 3 years (6008, 6018)/5 years (2502, 5502,
5503, 5512).
2. Battery Life Indicator (2502/5502/5503/5512/6018)
When the battery is nearly dead, the second hand starts moving in two
second increments.
3. If your watch has the “next date the battery should
be changed” stamped on the back, we recommend
that you change the battery before this date.

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4. Battery replacement of the professional diver’s watch (Caliber 5503).
• Thiswatch’sbatteryneedstobereplacedattheCitizenServiceCenteronly.
• TheServiceCenterwillcheckwaterresistanceandreplacepackingsif
necessary at the time of battery replacement.
• Ifadeadbatteryisleftinthewatch,itmaycausemalfunctioningordamage
due to fluid leakage.
• Ifyouareplanningtousethiswatchforalongperiodoftimeinaforeign
country, we recommend that you have the battery replaced before you leave.
• Besuretokeepthebatteryoutofreachofyourchildren.Ifthebatteryis
accidentally swallowed by a child, take him or her immediately to a doctor.