Seiko Cal. 8L35 User manual

INSTRUCTIONS (P. 3)
BEDIENUNGSANLEITUNG (S. 19)
INSTRUCTIONS (P. 35)
ISTRUZIONI (P. 51)
INSTRUCCIONES (P. 68)
INSTRUÇÕES (P. 84)
 ИНСТРУКЦИИ (P.100)
(115 )
Cal. 8L35, 8L55

English
3
lDo not attempt to dive using this watch unless you have been properly
trained in diving. For your safety, please abide by the rules of diving.
lBefore diving, make sure that the watch operates normally.
l When diving, never carry out operations other than those specified in the
accompanying booklet. Misuse of the product and misunderstanding of
the displayed content may lead to a fatal or serious accident.
l This watch is an auxiliary instrument which is intended to be used as
a timepiece. Use this watch with proper diving equipment, such as a
residual pressure gauge, water depth meter, etc., which is required for
safe diving.
WARNING
lPlease read and observe the instructions described in this booklet to ensure
the proper functioning of your diver's watch.
lDo not operate the crown when the watch is wet or in water.
lAvoid hitting the watch against hard objects such as rocks.
CAUTION
ENGLISH
You are now the proud owner of a SEIKO Automatic Diver’s Watch Cal. 8L35/8L55. For best results, please
read the instructions in this booklet carefully before using your SEIKO Automatic Diver’s Watch. Please
keep this manual handy for ready reference.
Sie sind jetzt stolzer Besitzer einer automatischen Taucheruhr SEIKO Kal.
8L35/8L55
. Bitte lesen Sie diese
Bedienungsanleitung vor der Verwendung der Uhr aufmerksam durch, um optimale Ergebnisse davon zu
erhalten. Heben Sie die Bedienungsanleitung gut auf, um jederzeit nachlesen zu können.
Vous voici l’heureux propriétaire d’une montre automatique de plongée SEIKO Cal. 8L35/8L55. Pour en
obtenir de bonnes performances, veuillez, avant d’utiliser la montre, lire attentivement les explications de
ce mode d’emploi que vous conserverez pour toute référence ultérieure.
Grazie per aver acquistato questo orologio automatico SEIKO Cal. 8L35/8L55 per subacqueo. Per
ottenerne i migliori risultati leggere attentamente le istruzioni di questo libretto prima di passare all’uso
dell’orologio stesso. Tenere poi il manuale a portata di mano, per ogni eventuale futura, ulteriore
consultazione.
Usted es ahora un honrado poseedor del reloj de buceador automatico SEIKO Cal. 8L35/8L55. Para
obtener de él los mejores resultados, lea las instrucciones del presente folleto con cuidado antes del uso de
su reloj de buceador automatico SEIKO. Guarde este manual para fácil referencia.
Você pode sentir-se orgulhoso de possuir um Relógio do mergulhador SEIKO Automático Cal. 8L35/8L55.
Para obter dele os melhores resultados, leia atentamente as instruções contidas neste opúsculo antes de
usar o seu Relógio do mergulhador SEIKO Automático. Conserve este manual para referências futuras.
Теперь Вы являетесь обладателем часов Аналоговые Кварцевые часы Калибра 8L35/8L55. Перед использованием
их, для достижения лучших результатов, пожалуйста, внимательно ознакомьтесь с данной инструкцией и обязательно
сохраните ее.
您現在是精工自動潛水錶機件編號 8L35/8L55 自豪的擁有者。為正確使用起見，請在使用精工自動潛水錶之前，
詳細閱讀本說明書。並將之妥善保管，以備今後參考。

English
English
4 5
PRECAUTIONS ON USING THE WATCH FOR DIVING
Before diving, make sure that the watch operates normally and be sure to observe the
precautions described below.
BEFORE DIVING
l
To measure the elapsed time while you are underwater, always use the rotating bezel.
lCheck that:
•the second hand is operating normally.
•the crown is locked tightly in place.
•there are no visible cracks in the crystal or the watch band.
•the strap or bracelet is securely fastened to the watch case.
•the buckle keeps the strap or bracelet firmly secured to the wrist.
•the rotating bezel turns counterclockwise smoothly (the rotation must not be too loose or too tight)
and the “ ” mark aligns with the minute hand.
•the time and calendar are appropriately set.
If there are any malfunctions, we recommend that you contact an AUTHORIZED SEIKO
SERVICE CENTER.
WHILE DIVING
lDo not operate the crown when the watch is wet or in water.
l Take care not to hit the watch against hard objects such as rocks.
lBezel rotation may become slightly stiffer underwater. This is not a malfunction.
AFTER DIVING
lRinse the watch in fresh water after diving and wash out all seawater, soil, sand, etc.
lWipe the watch thoroughly dry to prevent possible rust on the case after cleaning the watch in fresh water.
WARNING
CAUTION
WARNING notes indicate any condition or practice which, if not strictly observed,
could result in severe personal injury or possible death.
CAUTION notes indicate any condition or practice which, if not strictly observed,
may result in personal injury or property damage.

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English
6 7
I
For the care of your watch, see "TO PRESERVE THE QUALITY OF YOUR
WATCH" in the attached Worldwide Guarantee and Instruction Booklet.
CONTENTS
Page
WARNING/CAUTION ................................................................................................... 3
PRECAUTIONS ON USING THE WATCH FOR DIVING ............................................... 5
FEATURES ................................................................................................................... 7
SCREW LOCK TYPE CROWN ...................................................................................... 8
ROTATING BEZEL ........................................................................................................ 9
NAMES OF THE PARTS .............................................................................................. 10
HOW TO START THE WATCH...................................................................................... 11
TIME/CALENDAR SETTING ............................................................................................... 12
TO PRESERVE THE QUALITY OF YOUR WATCH........................................................ 14
ACCURACY OF MECHANICAL WATCHES .................................................................. 17
SPECIFICATIONS ......................................................................................................... 18
FEATURES
n HELIUM GAS RESISTANCE
In addition to its excellent water resistant quality, Cal. 8L35/8L55 watch is designed
for use in saturation diving using helium gas.
The SEIKO Automatic Diver’s Watches are specially designed for deep-sea diving.
n WATER RESISTANCE
The watches have been water-tested to 37.5 or 125 atmospheres of pressure/bar as
shown in the table below.
Description
on the dial
Water-tested to:
(atmosphere of pressure/bar)
Helium Gas
resistance
DIVER’S 300 m 37.5 YES
DIVER’S 1,000 m 125 YES

English
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8 9
SCREW LOCK TYPE CROWN
lSome models have the screw lock type crown, which can be locked by the screw
when it is not necessary to be operated.
lLocking the crown will prevent operating errors.
lUnscrew the crown before any crown operation. When the operation is over,
screw the crown in to lock.
nHOW TO OPERATE THE SCREW LOCK TYPE CROWN
If your watch has a screw lock type crown, unscrew it before any crown operation.
vAlways keep the crown locked unless it is necessary for operating the crown.
[To unscrew the crown]
Turn the crown counterclockwise
(downward) to unscrew it. The crown is
unlocked and can be operated.
The crown can be pulled
out.
[To screw the crown in]
Upon completion of the crown operation,
screw the crown in completely until it
stops by turning it clockwise (upward)
while gently pressing it back into the
original position.
Turn the crown while
pressing it back in.
ROTATING BEZEL 
The rotating bezel can show the elapsed time up to 60 minutes. By setting it before
diving, you can know how many minutes you are underwater.
lTo prevent accidental rotation, the rotating bezel is so designed that rotation
becomes harder in water. Also for safty's sake, it roatates only counterclock-
wise, so that the time measured is never shorter than the actual elapsed time.
Example:
"30" on rotating bezel
Minute hand
Start(10:10 AM)
" " mark
1. Turn the rotating bezel to align its " "mark with the minute hand.
* The rotating bezel rotates with clicks. With each click, it turns half a minute.
2. To know the elapsed time, read the number on the rotating bezel that the
minute hand points to.
30 minutes have elapsed.

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10 11
NAMES OF THE PARTS
a: Screwed-in position b: Normal position c: First click d: Second click
Crown
Date
Minute hand
Rotating bezel
Hour hand
Second hand
1. Unlock the crown by turning it counterclockwise.
2. Slowly turn the crown clockwise to wind the mainspring.
3. Continue to turn the crown until the mainspring is sufficiently wound.
The second hand will start moving.
4. Lock the crown by turning it clockwise while pressing it.
HOW TO START THE WATCH
lTo initially start your watch:
If your watch is completely stopped, it is recommended that you manually wind
the mainspring by turning the crown.
lHow to manually wind the mainspring by turning the crown
This watch is an automatic watch equipped with a manual winding mechanism.
1
23
4
2
3
2
a b c d

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12 13
Unlock the crown
by turning it
counterclockwise.
Pull out the crown
to the first click.
Turn the crown clockwise until
the previous day's date appears.
TIME/CALENDAR SETTING
Pull out the
crown to the
second click
when the second
hand is at the 12
o'clock position.
(The second hand
stops on the
spot.)
Turn the crown to advance the
hands until the date changes to
the next. When it has changed,
the time is set for the A.M.
period.
Keep advancing the hands to
set the correct time.
Push back the crown in
accordance with a time
signal.
Lock the crown by
turning it clockwise
while pressing it.
*Do not change the day or the date between 9:00 p.m. and 1:00 a.m.
3
12
7
6
54
• Turnthehands pastthe12o’clockmarker todeterminewhetherthe watch isset
for the A.M. or P.M. period. If the calendar changes when the hour hand passes
the12o’clockmarker,thetimeissetforA.M.Ifthecalendardoesnotchange,the
time is set for P.M.
• When setting the hands, rst set them to a time a few minutes earlier than the
correct time, and then advance them to the exact time.
• Itisnecessarytoadjustthedateontherstdayafteramonththathaslessthan31
days.
1
2
3
4
5
6
7
2
3

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14 15
TO PRESERVE THE QUALITY OF YOUR WATCH
lRepair of diver's watches requires special expertise and equipment. If you find that
your diver's watch is malfunctioning, therefore, never attempt to repair it but immedi-
ately send it to a nearby SEIKO Service Center.
nCHEMICALS nPERIODIC CHECK nMAGNETISM
Your watch will be
adversely affected by
strong magnetism.
Keep it away from
close contact with
magnetic objects.
NS
It is recommended that the
watch be checked once every 2
to 3 years by an AUTHORIZED
SEIKO DEALER or SERVICE
CENTER to ensure that the
case, crown, gasket and crystal
seal remain intact.
nTEMPERATURES
Be careful not to expose the
watch to solvents, mercury,
cosmetic spray, detergents,
adhesives or paints. Otherwise,
the case, bracelet, etc.
may become discolored,
deteriorated or damaged.
To prevent possible rusting
of the case and bracelet, wipe
them periodically with a soft
dry cloth.
nCARE OF CASE AND
BRACELET
nSHOCKS &
VIBRATION
Be careful not to drop
your watch or hit it
against hard surfaces.
n
PRECAUTION REGARDING
CASE BACK PROTECTIVE FILM
If your watch has a protective film
and/or a sticker on the case back,
peel them off before using your
watch.
The key components in mechanical watches are made of metals, which expand or contract
depending on temperatures due to metal properties. This exerts an effect on the accuracy
of the watches. Mechanical watches tend to loss time at high temperatures while they
tend to gain time at low temperatures.

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16 17
LUMIBRITETM
LumiBrite is a luminous paint that is completely harmless to human beings and the natural
environment, containing no noxious materials such as radioactive substances.
LumiBrite is a newly-developed luminous paint that absorbs the light energy of sunlight or
artificial light in a short time and stores it to emit light in the dark.
For example, if exposed to a light of more than 500 lux for approximately 10 minutes, LumiBrite
can emit light for 5 to 8 hours.
Please note, however, that, as LumiBrite emits the light it stores, the luminance level of the
light decreases gradually over time. The duration of the emitted light may also differ slightly
depending on such factors as the brightness of the place where the watch is exposed to light
and the distance from the light source to the watch.
When you make a dive in dark water, LumiBrite may not emit light unless it has absorbed and
stored light sufficiently.
Before diving, therefore, be sure to expose the watch to light under the conditions specified
above, so that it fully absorbs and stores light energy. Otherwise, use the watch together with
an underwater flashlight.
< Reference data on luminance >
(A) Sunlight
[Fine weather]: 100,000 lux [Cloudy weather]: 10,000 lux
(B) Indoor (Window side during daytime)
[Fine weather]: more than 3,000 lux [Cloudy weather]: 1,000 to 3,000 lux
[Rainy weather]: less than 1,000 lux
(C) Lightingapparatus(40-wattdaylightuorescentlight)
 [Distancetothewatch:1m]:1,000lux
 [Distancetothewatch:3m]:500lux(averageroomluminance)
 [Distancetothewatch:4m]:250lux
*
"
LUMIBRITE
"
is a trademark of SEIKO HOLDINGS CORPORATION.
ACCURACY OF MECHANICAL WATCHES
lThe accuracy of mechanical watches is indicated by the daily rates of one week
or so.
lThe accuracy of mechanical watches may not fall within the specified range
of time accuracy because of loss/gain changes due to the conditions of use,
such as the length of time during which the watch is worn on the wrist, arm
movement, whether the mainspring is wound up fully or not, etc.
lThe key components in mechanical watches are made of metals which expand
or contract depending on temperatures due to metal properties. This exerts an
effect on the accuracy of the watches. Mechanical watches tend to lose time at
high temperatures while they tend to gain time at low temperatures.
lIn order to improve accuracy, it is important to regularly supply energy to
the balance that controls the speed of the gears. The driving force of the
mainspring that powers mechanical watches varies between when it is fully
wound and immediately before it is unwound. As the mainspring unwinds, the
force weakens.
Relatively steady accuracy can be obtained by wearing the watch on the wrist
frequently for the self-winding type and winding up the mainspring fully
everyday at a fixed time to move it regularly for the wind-up mechanical type.
lWhen affected by external strong magnetism, a mechanical watch may loss/
gain time temporarily. The parts of the watch may become magnetized
depending on the extent of the effect. In such a case, consult the retailer from
whom the watch was purchased since the watch requires repair, including
demagnetizing.

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18
SPECIFICATIONS
1 Features ............................................................. 3 hands, time display (Hour, minute and second
hands) and date display
2 Vibrations per hour
8L35............................................................. 28,800
8L55............................................................. 36,000
3 Loss/gain (daily rate) ........................................... Between +15 and – 10 seconds at normal
temperature range (between 5 °C and 35 °C)
4 Continuous operating time
8L35............................................................. Approximately 50 hours
8L55............................................................. Approximately 55 hours
5 Driving system.................................................... Automatic winding type with manual winding
mechanism
6 Jewels
8L35............................................................. 26 jewels
8L55............................................................. 37 jewels
* The accuracy above is factory adjusted.
** Due to the characteristics of mechanical watches, any actual daily rate may not fall within the
range of time accuracy specified above dependent on the conditions of use, such as the length of
time during which the watch is worn on the wrist, temperature, arm movement, and whether the
mainspring is wound up fully or not, etc.