Seiko Cal. 9S85 User manual

www.grand-seiko.com 9S
JSYGS9S2-1403
MECHANICAL

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English
Length adjustment service for metallic bands is available at the retailer from whom the watch
was purchased. If you cannot have your watch repaired by the retailer from whom the watch
was purchased because you received the watch as a gift, or you moved to a distant place,
please contact SEIKO CUSTOMER SERVICE CENTER. The service may also be available on a
chargeable basis at other retailers, however, some retailers may not undertake the service.
If your watch has a protective lm for preventing scratches, make sure to peel it off
before using the watch. If the watch is used with the lm on it, dirt, sweat, dust, or
moisture may be attached to the lm and may cause rust.
CONTENTS
■CAUTIONS FOR ACCURACY ·········································································2
■HANDLING CAUTIONS ··················································································2
■INTRODUCTION -About mechanical watch- ··················································4
・Characteristics of a mechanical watch ··························································5
・For lifelong use of your mechanical watch ····················································7
■CHECK THE CALIBER NUMBER ·································································10
■NAMES OF THE PARTS················································································11
■HOW TO USE ·······························································································12
・For Cal. 9S85 ·····························································································13
・For Cal. 9S86, 9S66 ···················································································16
※List of time differences in major regions of the world ·······························22
・For Cal. 9S65 ·····························································································23
・For Cal. 9S64 ·····························································································26
■GRAND SEIKO STANDARD ··········································································28
・Grand Seiko (Special) Standard Inspection Certicate ································31
・Cautions for accuracy of mechanical watch ················································32
■TO PRESERVE THE QUALITY OF YOUR WATCH ········································33
・After-sale service ························································································33
・Guarantee ··································································································34
・Daily care ···································································································35
・Band ·········································································································· 36
・Water resistance ·························································································37
・Magnetic resistance (Magnetic inuence) ····················································38
・Lumibrite ····································································································39
・Troubleshooting ··························································································40
■SPECIFICATIONS (Movement) ·····································································41
Thank you very much for choosing a SEIKO watch. For
proper and safe use of your SEIKO watch, please read
the instructions carefully in this booklet before using it.
Keep this manual handy for easy reference.

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Immediately stop wearing the watch in the following cases.
○ If the watch body or band becomes edged by corrosion etc.
○ If the pins protrude from the band.
※ Immediately consult the retailer from whom the watch was purchased or
SEIKO CUSTOMER SERVICE CENTER.
Keep the watch and accessories out of the reach of
babies and children.
Care should be taken to prevent a baby or a child accidentally swallowing the
accessories. If a baby or child swallows the battery or accessories, immediately
consult a doctor, as it will be harmful to the health of the baby or child.
○
Normal usage accuracy of a mechanical watch varies depending on individual customer’s
use conditions such as winding state of the mainspring by movement amount of the
customer’s arm per day, temperature environment, and posture (direction of the watch).
Accordingly, the actual normal usage accuracy when the watch is used by a customer
may differ from the numerical value of each item specied in the Grand Seiko Standard.
○
The target range of normal usage accuracy when the watch is actually used by a
customer is set to –1 to +10 seconds (in the case of Cal. 9S86 and 9S85, -1 to +8
seconds) per day.
To correctly judge the normal usage accuracy, please use the watch for not only one day,
but also approximately one week to 10 days under normal use conditions to check loss
or gain of time. If the average value per day exceeds the target range, we will adjust the
watch. (Adjustment is provided Free of charge for two years after purchase, then
charged thereafter. For more details, please refer to the instruction manual.)
○
The enclosed Grand Seiko Standard Inspection Certificate certifies the values of a
movement single unit before assembly in a case which are measured under an articially
controlled environment in the production factory passed the Grand Seiko standard
inspection.
Should the certicate be lost or after repair or adjustment, it cannot be reissued.
Avoid wearing or storing the watch in the following places.
○ Places where volatile agents (cosmetics such as polish remover, bug repellent,
thinners etc.) are vaporizing
○
Places where the temperature drops below 5 ºC or rises above 35 ºC for a long time
○
Places of high humidity ○ Places affected by strong magnetism or static electricity
○ Dusty places ○ Places affected by strong vibrations
If you observe any allergic symptoms or skin irritation
Stop wearing the watch immediately and consult a specialist such as a dermatologist or an allergist.
Other cautions
○
Replacement of the metal band requires professional knowledge and skill. Please ask the retailer
from whom the watch was purchased for replacement of the metal band, as there is a risk of hand
or nger injury and fear of losing parts.
○ Do not disassemble or tamper with the watch.
○ K
eep the watch out of the reach of babies and children. Extra care should be taken to avoid risks
of any injury or allergic rash or itching that may be caused when they touch the watch.
○
If your watch is of the fob or pendant type, the strap or chain attached to the watch may damage
your clothes, or injure the hand, neck, or other parts of your body.
○
Please keep in mind that if a watch is taken off and placed down as it is, the case back, the band and
the clasp will rub against each other possibly causing scratches on the case back. We recommend
placing a soft cloth between the case back, the band and the clasp after taking off your watch.
WARNING
Do not use the watch in scuba diving or
saturation diving.
The various tightened inspections under simulated harsh environment, which
are usually required for watches designed for scuba diving or saturation
diving, have not been conducted on the water-resistant watch with the BAR
(barometric pressure) display. For diving, use special watches for diving.
CAUTIONS To indicate the risks of light injuries or material damages unless
the following safety regulations are strictly observed.
■CAUTIONS FOR ACCURACY
■HANDLING CAUTIONS
To indicate the risks of serious consequences such as severe injuries
unless the following safety regulations are strictly observed.
WARNING
Do not leave moisture, sweat and dirt on the
watch for a long time.
Be aware of a risk that a water resistant watch may lessen its water
resistant performance because of deterioration of the adhesive on the
glass or gasket, or the development of rust on stainless steel.
Do not pour running water directly from the faucet.
The water pressure of tap water from a faucet is high enough to
degrade the water resistant performance of a water resistant
watch for everyday life.
CAUTIONS
Do not turn or pull out the crown when the
watch is wet.
Water may get inside of the watch.
※
If the inner surface of the glass is clouded with condensation or water droplets appear inside of the watch
for a long time, the water resistant performance of the watch is deteriorated. Immediately consult the retailer
from whom the watch was purchased or SEIKO CUSTMER SERVICE CENTER.
Do not wear the watch while taking a bath or a sauna.
Steam, soap or some components of a hot spring may accelerate
the deterioration of water resistant performance of the watch.

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Thank you very much for purchasing the Grand Seiko mechanical watch
Take hold of your watch softly
Hear the watch ticking
Tick tock, tick tock, tick tock
Soft and faint, a dignied sound can be heard
The sound can be called
The crystal of the craftsmen's spirit and skill
Handpicked parts assembled one by one
Carefully, with craftsmanship,
Giving life to a mechanical watch
This is proven by the sound
Talking about accuracy,
Mechanical watches cannot be compared to
Quartz watches, that is for certain
However, the accuracy of a mechanical watch
Is pursued by human hands
Full of spirit and know-how of craftsmen
A mechanical watch - complicated, sensitive,
And having a human touch
We would like to let all of you know
The charm of a mechanical watch, which has no bounds
So we made this handbook, mainly detailing the accuracy
Wishing you will have a nice time
With your Grand Seiko for a long, long time
We will explain by example
Quartz watches that you have come to be
familiar with
These are just like airplanes, controlled by
computers
A battery, IC, and crystal make quartz
watches work accurately, electrically
Some loss or gain may occur while the
watch is worn
However, this will be too small to notice in
your daily life
If a quartz watch resembles an airplane,
A mechanical watch is like a bicycle
All watch parts work together mechanically
to make it tick
Thus, a mechanical watch is easily affected
by the outside environment
If it is hot, the watch tends to lose time
When power driving the watch becomes
short (When the amount the spring is
wound is short), accuracy becomes
unstable
If the resting position of the watch is
changed, accuracy is also affected
The rate of loss/gain could be significant
that you will notice in your daily life
The measured loss/gain of the watch per day
This is called the daily rate
The accuracy of a mechanical watch
Is usually shown in this daily rate
The accuracy of a mechanical watch changes
delicately day by day
Depending on the condition in which the watch is used
or the outside environment
Thus,
By only observing loss/gain in one day
You cannot judge how accurate the watch works
If you check the average of the daily loss/gain rate,
You can judge the accuracy of the watch
In the case of quartz watches, the accuracy is usually
shown by the monthly/yearly rate
Total losses/gains for a month/year are called the loss/
gain rate of quartz watches
■ INTRODUCTION -About mechanical watch-
Quartz watches and mechanical watches - what is the difference?
The accuracy is shown by the daily rate
Seiko Watch Corporation
Characteristics of a mechanical watch

High
Duration from a fully wound state
Power the mainspring supplies
Low
Vertical-3
o’clock
Horizontal-
dial up
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The accuracy of a mechanical watch varies depending on many things,
Such as the amount the spring is wound by movements of your arm, temperature, or resting position
of the watch
Thus to show the accuracy of a mechanical watch evenly, not depending on the environment
Loss/gain of a mechanical watch is measured
Before the inside movements of the watch are put in the case,
Under controlled conditions,
With many days of tests
And the measured rate is called "the accuracy of mechanical watch movement at rest"
In both the Ofcial Swiss Chronometer Inspectorate and Grand Seiko Standard
The standard rate is the accuracy of mechanical watch movement at rest
＊
Refer to the instruction manual for further information on the Grand Seiko Standard and Rating
Certicate.
The accuracy of a mechanical watch in use should be from –1 second/day to +10 seconds (+8 seconds
for Cal. 9S86 and 9S85) /day. If the average of the daily rates exceeds this level, we would like the
responsibility for adjusting it accordingly ([Only in Japan]. The cost of adjusting the watch is free of charge
for two years from the date of purchase.
To adjust the accuracy as accurately as possible, information such as the rate of loss/gain of your watch
and how you use it, are very important. Please let us know the following when you ask for adjustment of
your watch by our service center.
(1) The average daily loss/gain rates for one week to ten days
Ex. an average of +11 seconds
(2) Approximate hours of wearing the watch in one day in the above period
Ex. Approximately 10 hours
(3) The resting position of the watch while you don't wear it
Ex. Horizontal - Dial up
Vertical - the crown up
This rate is the data measured in an environment that is articially controlled
In order to fairly evaluate/show the abilities of mechanical watches without being
inuenced by environmental changes
So it is different from “the accuracy of mechanical watches in use”
When you are actually wearing the watch
The accuracy of a mechanical watch varies delicately day by day, depending on the
environment
This is like a living thing
One of the charms that a mechanical watch has
As there are rules for everything
There is a rule for winding the spring
You have not heard this before?
Please keep it in mind
The mainspring - the source of energy for a
mechanical watch
When it is fully wound, it can supply the most stable
energy to every part of the watch movement, and the
accuracy of the watch becomes most stable
Even if your watch is a self-winding type,
when you feel the accuracy is not stable,
Shake the watch or turn the crown about
thirty times to wind the mainspring further
If you work at a desk, etc., and do not
move too much,
The spring will not be wound sufciently
If your watch is a wind-up mechanical type,
Turn the crown thirty to forty times every day,
at a xed time
To wind the mainspring sufciently
To use the watch with better accuracy,
Wind the mainspring every day, at a fixed
time
Please keep to this rule as best as possible
For instance,
You may make it a rule to wind the spring
When you wake up, or at lunchtime
Wind the mainspring of your mechanical watch at a xed time.
Place your watch correctly, like this.
Half of one day, twenty-four hours
When you do not wear your watch
The accuracy while you do not wear the watch is included in “the
accuracy of a mechanical watch in use”
The mechanical watch that you take off
Which position should the watch be put in?
The loss/gain of a mechanical watch
Depends on the resting position of the watch
In one position, the watch tends to gain, in another position, it doesn't
For instance, while you are sleeping at night,
When you do not wear your watch
Put the watch in various positions for seven to eight hours, such as
placing it with its face turned up, or with the crown up
To nd the best resting position for the watch for reducing the loss/
gain that occurs while you are wearing your watch
The accuracy of a mechanical watch movement at
rest / the accuracy of a mechanical watch in use
For lifelong use of your mechanical watch rule No.1
For lifelong use of your mechanical watch rule No.2
Characteristics of a mechanical watch

<<Balance>>
Hairspring
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A piece of metal of about 0.1 mm, as
thin as a hair, is wound
That is the key that controls the
accuracy of all mechanical watches
Metals expand and contract depending on the
temperature
This characteristic of all metals also applies to the
hairspring
This affects the accuracy of a mechanical watch
In other words,
When it is hot, the hairspring expands
and the watch tends to lose
When it is cold, the hairspring
contracts and the watch tends to gain
This is typical
After you take off your watch
Do you leave it by your cell phone?
Or put it on a television or next to your PC?
Do you put it in your bag with your cell phone?
Watches do not like magnetism
They may lose or gain when affected by
magnetism
To make your mechanical watch work more
accurately
It is important not to leave the watch close to
magnetic objects for a long time
In particular, cell phones, televisions and
speakers of PCs have strong magnetism
A magnetic necklace, a clasp of a handbag,
magnetic parts of refrigerators
There are many magnetic objects around us
Please be careful
When you play golf, tennis or
baseball
When you play a sport that gives
your arm a strong impact
Please take off your mechanical
watch
There are reasons for this
For instance,
At the moment you hit a golf ball with a club
The impact of the ball against the club is about 1 ton
The impact is given to your wrist
And this will affect very small parts inside your
mechanical watch
Sometimes the impact will deform or break a watch
part
“Good shot” for you becomes “bad shock” for your
watch
Love your watch, once every three years
Talk about an overhaul
In the case of a mechanical watch, there is no
need to change your battery
However
Maintenance of your watch is also necessary
Once every three years
Please take your watch to our service center
For examining and cleaning every part of your
watch
Once you start using it
Your watch never takes a rest
And in the case of a mechanical watch, power
given to its gear is stronger,
Compared to a quartz watch
So parts may wear,
Oil may dry or be insufcient in some parts
Especially
The rst three years after you start using your watch is the
period when
Each part gets used to one another
And contacting each other causes additional metal powder
An overhaul after the rst three years is
The key to the life of your mechanical watch
Please keep in mind
An overhaul, once every three years
Can be considered
Love for your watch
For lifelong use of your mechanical watch rule No.3 For lifelong use of your mechanical watch rule No.5
For lifelong use of your mechanical watch rule No.6
For lifelong use of your mechanical watch rule No.4
Accuracy will vary depending on the temperature. Do not give your mechanical watch a strong shock.
Overhaul, once every three years
Keep your mechanical watch away from magnetic objects.

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■NAMES OF THE PARTS
About the caliber number
The caliber number is a four-digit number that indicates the model of a
movement (mechanical part of a watch). The Grand Seiko watch is mounted
with an exclusive caliber. The mechanical caliber number starts with “9S”, the
spring drive caliber number starts with “9R” and the quartz caliber number
starts with “9F”.
※ Some quartz caliber number starts with “8J” or “4J”.
How to check the caliber number
The four-digit model number on the case back is the caliber number.
In the case of mechanical models, the attached “Grand Seiko Standard
Inspection Certicate” is printed with “Caliber No.” So, the caliber number can
also be checked on the certicate.
Model Number
<Regular case back> <See-through case back>
※ The above figures are examples and may differ from the figure on the case back of your watch.
9S85-00A0
8
5
8
5
Caliber Number
(Ex.)
Minute hand
Date
Hour hand
Second hand
Crown
AUTOMATIC
GMT
Minute
hand
Hour
hand
Second
hand
Date
24-hour
hand
Crown
9S85, 9S65, 9S64
9S86, 9S66
■CHECK THE CALIBER NUMBER

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■HOW TO USE HOW TO USE (FOR CAL. 9S85)
Crown
There are two types of crowns, a normal crown and a screw-lock crown.
Screw-lock type crown
The screw-lock type crown features a mechanism that can securely lock the
crown when they are not being operated in order to prevent any operational errors
and to improve its water resistant property.
○
It is necessary to unlock the screw-lock type crown before operating it.
○
Once you have nished operating the crown, make sure to relock it.
※ By locking the crown by screw, a
screw-lock type crown can
prevent malfunction and increase
water resistance.
※ Be careful not to screw the crown
in by force as it may damage the
slots of the crown.
※
When locking the crown, turn it slowly with care, ensuring that the screw is properly engaged.
Be careful not to push it in forcefully, as doing so may damage the screw hole in the case.
How to wind the mainspring
○
This watch is an automatic winding type (with manual winding function).
○
The mainspring can be sufficiently wound automatically by natural
movement of the arm while normally worn on the wrist. In addition, it can
be wound by turning the crown.
○
A stopped watch can be started by arm movement when it is worn on the
wrist, however, before wearing the watch, wind the mainspring sufciently
and adjust the time and date. When turning the mainspring, turn the crown
at the normal position clockwise (12 o'clock direction) slowly. If you turn the
crown counterclockwise (6 o'clock direction), it will turn free. The
mainspring is sufciently wound when the crown is turned approximately 45
times. When the mainspring is in the full-winding state, it is structured so
that the mainspring slips if it is wound. Therefore, it is not necessary to
worry about cutting the mainspring, however, please refrain from excessive
operation.
※ It is recommended that you wear the watch on your wrist more than 10 hours a day
to keep the mainspring wound up. If the mainspring is not wound up sufciently, the
watch may lose or gain time. If you do not wear the watch on your wrist, wind the
mainspring up sufciently by turning the crown by hand every day at a xed time.
The crown
turns.
The crown
does not
turn.
※
It cannot be
turned any
further.
While
p r e s s i n g
the crown
in, turn it in
the direction
indicated by
the arrow.
Normal crown
Screw-lock type crown
Pull out the crown and operate it.
Unlock the crown
before operating it.
After operating the
crown, lock it.
Screw
While pressing the crown
Unscrew
[ To unlock the crown ]
Turn the crown counterclockwise
(downward) to unscrew it. Now the
crown can be operated.
[ To lock the crown ]
Turn the crown clockwise (upward)
while gently pressing it in toward the
watch body until it stops.
After operating
the crown, lock it.
Screw
While pressing the crown in
Unlock the crown
before operating it.
Unscrew
Crown
locked
Crown
unlocked

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First click
③ Pull out the crown to the second click when the second hand is at the 12
o'clock position. (The second hand stops.) Turn the crown clockwise until
the desired date appears. When the date changes, the time is a.m. Further
turn the crown to set the current time.
④ Push the crown back into
the normal position in
accordance with a time
signal. The watch starts
operating.
CAUTION
For models with a screw lock type crown, remember to screw the crown in.
CAUTION
For models with a screw lock type crown, remember to screw the crown in.
Normal
position
Second
click
First
click
Date adjustment at the end of the month
It is necessary to adjust the date after February (which has 28 days, 29 days in
a leap year) and a 30 day month.
【Ex.】
To adjust the date in the a.m. period
on the rst day of a month following
a 30-day month
On the first day, ''31'' is displayed.
Pull out the crown to the first click.
Turn the crown clockwise to set the
date to ''1'', and push the crown
back in to the normal position.
First click
CAUTION
○ Do not adjust the date between 10 o'clock p.m. and 1 o'clock a.m. If the
date is adjusted during this period of time, the date may not change when
the next day comes, or this may cause damage.
○ Due to its wheel train mechanism, for setting the time of the mechanical
watch correctly, the hands should be set back once slightly and then set
forward to the correct time.
How to set the time and date
This watch is equipped with the date display function. The date changes once
every 24 hours at around 12 o'clock a.m. Therefore, if the a.m./p.m. is
incorrectly set, the date will change around 12 o'clock p.m.
① Pull out the crown to the rst click. (If the watch is equipped with the screw
lock type crown, unscrew the crown before pulling it out.)
② The date can be adjusted by turning the crown clockwise (12 o'clock
direction). First turn the crown clockwise until the previous day's date from
the desired date appears.
(Ex.) If you want to set the date to ''6,''
set the date to ''5'' by turning the
crown clockwise.
HOW TO USE (For Cal. 9S85) HOW TO USE (For Cal. 9S85)

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HOW TO USE (FOR CAL. 9S86, 9S66)
How to wind the mainspring
○
This watch is an automatic winding type (with manual winding function).
○
The mainspring can be sufciently wound automatically by natural movement of the
arm while normally worn on the wrist. In addition, it can be wound by turning the crown.
○
A stopped watch can be started by arm movement when it is worn on the
wrist, however, before wearing the watch, wind the mainspring sufciently
and adjust the time and date. When turning the mainspring, turn the crown
at the normal position clockwise (12 o'clock direction) slowly. If you turn the
crown counterclockwise (6 o'clock direction), it will turn free. The mainspring
is sufciently wound when the crown is turned approximately 45times (60
times for Cal. 9S66). When the mainspring is in the full-winding state, it is
structured so that the mainspring slips if it is wound. Therefore, it is not
necessary to worry about cutting the mainspring, however, please refrain
from excessive operation.
※ It is recommended that you wear the watch on your wrist more than 10 hours a day
to keep the mainspring wound up. If the mainspring is not wound up sufciently, the
watch may lose or gain time. If you do not wear the watch on your wrist, wind the
mainspring up sufciently by turning the crown by hand every day at a xed time.
How to set the time and calendar
○ To set the time and calendar, set the 24-hour hand and minute hand rst,
and then set the hour hand and calendar.
○ When setting the time, make sure that the mainspring is sufciently wound.
How to set the time
① Make sure that the mainspring is sufficiently wound and the watch is
working.
※ When setting the date and time, ensure
that the watch is working.
② Unlock the crown.
⇒ Refer to "How to use the screw
lock type crown" on page 12.
③ Pull out the crown to the second
click when the small second hand
is pointing at the " 0 " second
position. The small second hand
will stop on the spot.
④ Turn the crown to rotate the 24-hour hand and minute hand clockwise and
set them to the current time.
While doing so, set the minute
hand a few minutes behind the
correct time, and then slowly
advance it to the desired time.
※ Only the 24-hour and minute hands
are to be set rst. Even if the hour
hand is indicating incorrect time, or
the date may be altered depending
on the position of the hour hand, it
is not necessary to make an
adjustment at this stage.
⑤ Push the crown back in simultaneously with the
time signal.
※ The setting of the 24-hour, minute and small second
hands to the current time is now completed.
⑥ To move on to the hour hand and calendar setting,
pull the crown out to the rst click.
⑦ Turn the crown to set the hour hand.
While turning the crown, the moment
the date changes is midnight. When
setting the hour hand, be sure that
AM/PM is set correctly. Adjust the
calendar also at this point if
necessary.
※ The crown can be turned in either direction
to adjust the date, however, it is
recommended to turn the crown in the
direction which enables you to set the date
with a smaller adjustment.
※ Turn the crown slowly, checking that the hour hand moves in one-hour increments.
※ When adjusting the hour hand, the other hands may move
slightly. However, this is not a malfunction.
⑧ Push the crown back in to complete the time setting.
Relock the crown.
⇒
Refer to "How to use the screw lock type crown" on
page 12.
AUTOMATIC
GMT
Pull out the
crown to the
second click.
AUTOMATIC
GMT
Set the
24-hour hand
and minute
hand.
AUTOMATIC
GMT
Push the crown back
in simultaneously
with the time signal.
Pull the crown out
to the rst click.
HOW TO USE (For Cal. 9S86, 9S66)

Before date
adjustment
18
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English
How to set the calendar
Two full rotations of the hour hand will change the date for one day.
The date advances one day by turning the hour hand two full rotations
clockwise (for 24 hours), while the date is set back one day by turning the
hour hand two full rotations counterclockwise.
※ Manual date adjustment is required on the rst day after a month that has less
than 31 days: February, April, June, September and November.
①
Make sure that the mainspring is sufciently wound and the watch is working.
※ When setting the date and time, ensure that the watch
is working.
② Unlock the crown.
⇒ Refer to "How to use the screw lock type crown"
on page 12.
③ Pull out the crown to the rst click.
④ Each time the hour hand makes two full rotations
by turning the crown, the date is adjusted one
day. While turning the crown, the moment the date changes is midnight.
When setting the hour hand, be sure that a.m./p.m. is set correctly.
⑤ Upon completion of setting, make sure that the time indicated is correct,
and then push the crown back in. The calendar setting is now completed.
Relock the crown.
⇒ Refer to "How to use the screw lock type crown" on page 12.
※ The calendar is designed to work in conjunction with the movement of the hour
hand, therefore, incorrect setting of a.m./p.m. will cause the date to change at
noon.
※ The crown can be turned in either direction to adjust the date, however, it is
recommended to turn the crown in the direction which enables you to set the
date with a smaller adjustment.
※ Turn the crown slowly, checking that the hour hand moves in one-hour
increments.
※ When adjusting the hour hand, the other hands may move slightly. However,
this is not a malfunction.
Turning the crown clockwise (upward):
Each time the hour hand makes two full
rotations, the date is advanced one day.
※ The crown can be turned in either
direction to adjust the date, however, it is
recommended to turn the crown in the
direction which enables you to set the
date with a smaller adjustment.
※ Turn the crown slowly.
※
When adjusting the hour hand, the other
hands, the other hands may move slightly.
However, this is not a malfunction.
Turning the crown counterclockwise
(downward):
Each time the hour hand makes two full
rotations, the date is set back one day.
Pull out the crown
to the rst click.
HOW TO USE (For Cal. 9S86, 9S66) HOW TO USE (For Cal. 9S86, 9S66)

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How to use the 24-hour hand
This watch has two different types of 24-hour hand usage.
Time difference adjustment function
For example, while traveling abroad and staying in a place with a different time
from where you live, you can conveniently set the watch to indicate the local
time in the different time zone area without stopping the watch.
The hour hand indicates the time of the place where you currently are, while
the 24-hour hand indicates the time of the place of origin.
The calendar works in conjunction with the movement of the hour hand. If the
time difference is correctly adjusted, the watch displays the correct date of the
place where you are staying.
How to use the time difference adjustment function
① Make sure that the mainspring is sufciently wound and the watch is
working.
※ When setting the hour hand to use the time difference
adjustment function, ensure that the watch is working.
② Unlock the crown.
⇒
Refer to "How to use the screw lock type crown" on
page 12.
③ Pull out the crown to the rst click.
<Type 1> 24-hour hand as an a.m./
p.m. indicator
Simply using the 24-hour hand to
show the 24-hour time as an a.m./
p.m. indicator. (This is the standard
usage type for the 24-hour hand.)
<Type 2> 24-hour hand as a dual time indicator
Using the time difference adjustment
function, set the 24-hour hand to
indicate a time different from the time
that the hour and minute hand indicate,
which is of a place in a different time
zone area with at least one hour of time
difference from where you are.
Both the hour hand and the 24-
hour hand are indicating the
Japan time 10:00 a.m.
Hour hand: Japan time 10:00 a.m.
24-hour hand: New York time 8:00 p.m.
④ Turn the crown to set the hour hand to indicate the time of the place where
you are staying. Make sure that a.m./p.m. and date are correctly set.
※ The calendar is designed to work in conjunction with the movement of the hour hand,
therefore, incorrect setting of a.m./p.m. will cause the date to change at noon.
⇒
Refer to "List of time zone differences in major regions of the world" on page 22.
Selectable display mode
With the time difference adjustment function, the watch features a dual time
display which shows time in two different time zones. It offers two display
modes which you can select to suit your needs and preference.
⑤ Upon completion of setting, make sure that the time indicated is correct,
and then push the crown back in. The setting procedure is now completed.
Relock the crown.
⇒ Refer to "How to use the screw lock type crown" on page 12.
※ If you set the time during any time between 9:00 p.m. and 1:00 a.m., temporarily set
the hour hand back to 8:00 p.m., and then set the time.
※ The crown can be turned in either direction to adjust the time, however, it is
recommended to turn the crown in the direction which enables you to set the date
with a smaller adjustment.
※ Turn the crown slowly, checking that the hour hand moves in one-hour increments.
※ While turning the crown, the moment the date changes is midnight.
※ When adjusting the hour hand, the other hands may move slightly. However, this is
not a malfunction.
Example 1 :
Hour hand and calendar: Area A (Japan)
24-hour hand: Area B (New York)
Example 2 :
Hour hand and calendar: Area B (New
York) 24-hour hand: Area A (Japan)
Set the 24-hour hand rst, and then set the hour hand.
Turning the crown
clockwise
(upward): The hour
hand is advanced
one hour.
Turning the crown
counterclockwise
(downward): The
hour hand is set
back one hour.
Pull out the
crown to the
rst click.
AUTOMATIC
GMT
AUTOMATIC
GMT
AUTOMATIC
GMT
AUTOMATIC
GMT
AUTOMATIC
GMT
AUTOMATIC
GMT
HOW TO USE (For Cal. 9S86, 9S66) HOW TO USE (For Cal. 9S86, 9S66)

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List of time zone differences in major regions of the world
Names of the cities UTC ± (Hours) JST ± (Hours) Other cities in the same region
Tokyo +9:00 ±0:00 Seoul
Beijin +8:00 -1:00
Hong Kong, Manila, Singapore
Bangkok +7:00 -2:00 Jakarta
Dacca +6:00 -3:00
Karachi +5:00 -4:00 Tashkent
Moscow +4:00 -5:00 Dubai
Jeddah +3:00 -6:00 Nairobi, Mecca
Cairo +2:00 -7:00 ★Istanbul, ★Athens
★Paris +1:00 -8:00 ★Rome, ★Berlin,
★Madrid
★London ±0:00 -9:00 ★Casablanca
★Azores -1:00 -10:00
★Rio de Janeiro -3:00 -12:0 0
★Santiago -4:00 -13:00
★New York -5:00 -14:00 ★Montreal
★Chicago -6:00 -15:00 ★Mexico City
★Denver -7:00 -16:00
★Los Angels -8:00 -17:00 ★San Francisco
★Anchorage -9:00 -18:00
Honolulu -10:00 -19:00
Midway Island -11:00 -20:00
★Wellington +12:00 +3:00 Fiji
Nouméa +11:00 +2:00 Vladivostok
★Sydney +10:00 +1:00 Guam
・ UTC = Coordinated Universal Time ・ JST = Japan Standard Time
・ Regions marked with “★” use daylight saving time. (as of January, 2014)
HOW TO USE (FOR CAL. 9S65)
How to wind the mainspring
○ This watch is an automatic winding type (with manual winding function).
○ The mainspring can be sufficiently wound automatically by natural
movement of the arm while normally worn on the wrist. In addition, it can
be wound by turning the crown.
○ A stopped watch can be started by arm movement when it is worn on the
wrist, however, before wearing the watch, wind the mainspring sufciently
and adjust the time and date. When turning the mainspring, turn the crown
at the normal position clockwise (12 o'clock direction) slowly. If you turn the
crown counterclockwise (6 o'clock direction), it will turn free. The
mainspring is sufciently wound when the crown is turned approximately 45
times for caliber 9S85, and approximately 60 times for caliber 9S65 and
9S66. When the mainspring is in the full-winding state, it is structured so
that the mainspring slips if it is wound. Therefore, it is not necessary to
worry about cutting the mainspring, however, please refrain from excessive
operation.
※ It is recommended that you wear the watch on your wrist more than 10 hours a day
to keep the mainspring wound up. If the mainspring is not wound up sufciently, the
watch may lose or gain time. If you do not wear the watch on your wrist, wind the
mainspring up sufciently by turning the crown by hand every day at a xed time.

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English
CAUTION
○ Do not adjust the date between 10 o'clock p.m. and 1 o'clock a.m. If the
date is adjusted during this period of time, the date may not change when
the next day comes, or this may cause damage.
○ Due to its wheel train mechanism, for setting the time of the mechanical
watch correctly, the hands should be set back once slightly and then set
forward to the correct time.
How to set the time and date
This watch is equipped with the date display function. The date changes once
every 24 hours at around 12 o'clock a.m. Therefore, if the a.m./p.m. is
incorrectly set, the date will change around 12 o'clock p.m.
① Pull out the crown to the rst click. (If the watch is equipped with the screw
lock type crown, unscrew the crown before pulling it out.)
② The date can be adjusted by turning
the crown clockwise (12 o'clock
direction). First turn the crown
clockwise until the previous day's
date from the desired date appears.
(Ex.) If you want to set the date to ''6'',
set the date to ''5'' by turning the
crown clockwise.
First click
③ Pull out the crown to the second
click when the second hand is at the 12 o'clock position. (The second
hand stops.) Turn the crown clockwise until the desired date appears.
When the date changes, the time is a.m. Further turn the crown to set the
current time.
④ Push the crown back in to the
normal position in accordance
with a time signal. The watch
starts operating.
CAUTION
For models with a screw lock type crown, remember to screw the crown in.
CAUTION
For models with a screw lock type crown, remember to screw the crown in.
Normal
position
Second
click
First
click
Date adjustment at the end of the month
It is necessary to adjust the date after February (which has 28 days, 29 days in
a leap year) and a 30-day month.
【Ex.】
To adjust the date in the a.m. period
on the rst day of a month following
a 30-day month
On the rst day of a 30 day month,
''31'' is displayed. Pull out the crown
to the first click. Turn the crown
clockwise to set the date to ''1'', and
push the crown back in to the normal
position.
First click
HOW TO USE (For Cal. 9S65) HOW TO USE (For Cal. 9S65)

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HOW TO USE (FOR CAL. 9S64)
How to wind the mainspring
○ This watch is a manual winding type.
○ In order to wind it up completely, please refer to the following table ;
In case the watch is supposed
to be wound up every day.
About 20 turns of the crown will wind up
the watch fully.
In case the watch was not wound
up more than three days.
About 60 turns of the crown will wind up
the watch fully.
○ From the state of the mainspring being sufciently wound, it continuously
operates for approximately 72 hours or more.
○
If the mainspring is not wound up sufciently, the watch may lose or gain time.
To attain a high accuracy, we suggest that the mainspring is wound up fully
once a day at a xed time.
How to wind the mainspring
※
When the watch is used from a state in which the mainspring is unwound to a stop, it
does not move immediately even if the mainspring is wound with the winding crown.
This is because of the mechanical watch's feature that the mainspring torque (force) is
weak at the beginning of mainspring winding. The second hand starts moving when
the mainspring is wound to reach a certain degree of torque strength, while the watch
can be made to move advance by shaking it to rotate the balance wheel forcibly.
Generally speaking, the crown of the manual winding mechanical watch cannot be turned
further when it is wound up fully. However, the crown of Cal. 9S64 can be turned
endlessly even after the watch is fully wound up. If you keep turning the crown, that gives
no effect to winding, but the watch is so designed as to make the winding a little tighter
and not to damage the watch. However, please refrain from excessive operation.
CAUTION
For models with a screw lock type crown, remember to screw the crown in.
① Pull out the crown when the
second hand is at the 12 o'clock
position.
(The second hand stops.)
Turn the crown to set the current
time.
② Push the crown back in to the
normal position in accordance
with a time signal.
The watch starts operating.
HOW TO USE (For Cal. 9S64)
Do not pull out the crown.
(If the watch is equipped with
the screw lock type crown,
unscrew the crown before
pulling it out.)
Slowly turn the crown
clockwise (12 o'clock
direction) to wind the
mainspring.

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29
English
■GRAND SEIKO STANDARD
Due to the movement (driving body) structure, normal usage
accuracy of a mechanical watch varies according to differences
in environmental conditions of use such as winding state of the
mainspring by movement amount of the wrist per day,
temperature environment, and position = orientation of a watch.
"Grand Seiko Standard" is a Seiko-exclusive accuracy standard
for mechanical watches, which has been established to check
superior performance of Grand Seiko mechanical watches
irrespective of differences in environmental conditions of use in
which a watch is used.
⇒For details of the "Grand Seiko Standard," refer to pages 30
to 31.
It is conditioned that all of Grand Seiko mechanical watches are
to be passed by the "Grand Seiko Standard Inspeciton"
according to the exacting standard. Only products, in which the
movement single unit before assembly in a case is measured for
gain/loss (daily rate) under various environments which are
artificially controlled in the manufacturing plant for 17 days in
total, and the measured values fall under the standard range,
are given the title of "Grand Seiko."
Grand Seiko Special Standard
The Grand Seiko Special Standard is an accuracy standard
that sets even more exacting conditions than the Grand Seiko
Standard.
As for a model mounted with a caliber that passes this
standard inspection, as proof of passing, the logo “SPECIAL” is
printed on the dial.
For normal usage accuracy when the watch is actually used by
a customer, -1 to +10 seconds (+8 seconds for Cal. 9S86 and
9S85) per day are specied as target values. To properly judge
the accuracy in the case of normal usage, check gain/loss by
using for a week to ten days, not only for one day, in normal
use condition. If the mean value per day exceeds the above-
mentioned target range, we will adjust the watch. (Adjustment
is provided free of charge within two years after purchase. After
the two-year period, adjustments are charged.) We will respond
to the following cases at cost regardless of the period of time
after purchase.
○
Disorder in accuracy has occurred due to customer's
carelessness such as, incorrect usage method or
magnetizing the watch.
○
Disorder in accuracy has occurred due to repair by
another company.
○
Disorder in accuracy has occurred due to natural
disasters such as re, ood or earthquake.
○ Guaranteed conditions have been altered.
Description of Grand Seiko Standard
Item Unit Standard Special Standard
Mean daily rate in
different positions Second/date −3.0 〜 ＋5.0 −2.0 〜 ＋4.0
Mean variation Second/date Less than 1.8 Less than 1.6
Maximum variation Second/date Less than 4.0 Less than 3.0
Difference between at
and hanging position Second/date −6.0 〜 ＋8.0 −5.0 〜 ＋7.0
Greatest difference
between the mean daily
rate and any individual
rate
Second/date Less than 8.0 Less than 7.0
First variation of rate per 1℃ Second/date /℃ −0.5 〜 ＋0.5 −0.3 〜 ＋0.3
Second variation of rate per 1℃ Second/date /℃ −0.5 〜 ＋0.5 −0.3 〜 ＋0.3
Rate-resumption Second/date −5.0 〜 ＋5.0 4.0
Number of positions in inspection 6 positions
Condition of temperature in inspection 8, 23, 38℃
Total days of inspection 17 days

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Grand Seiko Standard Inspection Certicate
○ Grand Seiko Standard Inspeciton Certicate certies the values of a
movement single unit before assembly in a case which were
measured under an artificially controlled environment in the
manufacturing plant have passed the Grand Seiko Standard
Inspeciton. The certificate is printed with the caliber number,
movement serial number, and case serial number.
○ Normal usage accuracy of mechanical watches varies according to
respective customer conditions of use (winding state of the
mainspring by movement amount of the wrist per day, temperature
environment, and position (orientation of a watch). Accordingly, the
actual normal usage accuracy when it is used by a customer may
differ from the value of each item specified in the Grand Seiko
Standard.
CAUTION
The Grand Seiko Standard Inspeciton Certificate cannot be
reissued when it has been lost. Also, it cannot be reissued
after repair or adjustment.
Description of Grand Seiko Standard Terminology
Item Meaning
Position in
inspection
5 orientations are specified by the International Standard
ISO3158 so as to carry out various kinds of tests for time
keeping. In addition thereto, in the GS inspection, 12 o'clock
Up position in the state where a watch taken off the wrist is
placed, is added, 6 orientations are specied. (Dial Up, Dial
Down, 12 o'clock Up, 3 o'clock Up, 6 o'clock Up, and 9
o'clock Up)
Mean daily
rate
Mean value of a total of 12 daily rates measured in 6 different
positions, respectively, for two days. This is a target value
indicating basic gain/loss per day of a watch, however, it is
required to comprehensively judge the actual accuracy
performance in consideration of other items.
Mean
variation
Mean value of a total of 6 variations of daily rates between the
first day and second day when measured in 6 different
positions for two days each. It indicates the degree which daily
accuracy stabilizes in each position.
Maximum
variation
Maximum value of a total of 6 variations of daily rates between
the first day and second day when measured in 6 different
positions for two days each. It indicates the degree which
accuracy per day changes at maximum according to positions.
Difference
between at
and hanging
position
Indicates gain/loss in two positions at which a watch is most
frequently used in daily life. It is a difference between mean
daily rates for two days when a watch is placed in the dial Up
position and mean daily rates for two days when a watch is
placed in the 6 o'clock Up position.
Greatest
difference
between the
mean daily
rate and any
individual
rate
Maximum difference value between daily rates for twelve days
in the test initial stage and mean daily rates. It indicates the
degree at which the daily rate varies according to the manner
for placing a watch.
First variation
of rate per
1℃
Variation in daily rates per 1 ℃ between 38 ℃ and 8 ℃ in the
same position (Dial Up position). It indicates gain/loss in the
temperature environment (taken-off state from the wrist) where
a watch is used.
Second
variation of
rate per 1℃
Variation of daily rates per 1℃ between 38℃ and 23℃ in the
same position (Dial Up position). It indicates gain/loss in the
temperature environment (worn state of the wrist) where a
watch is used.
Rate-
resumption
Value obtained by subtracting mean daily rates of initial two
days from daily rate of the last inspection day. It indicates the
degree at which daily rate stabilizes after usage for a
predetermined period.

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Cautions for accuracy of mechanical watch ■
TO PRESERVE THE QUALITY OF YOUR WATCH
Mechanical watches have a mechanism that is moved by power generated
when the mainspring is unwound, and small metal parts physically work
together to control the accuracy. Fragile metal parts of a mechanical watch are
easily inuenced by external environment such as temperature, gravity, and
shock. Also, conditions of use such as normal usage time and winding state of
the mainspring can, inuence the gain/loss of the watch.
① Accuracy of mechanical watch is "mean daily rate."
Accuracy of the quartz watch is indicated monthly or annually such as a
monthly rate of ±15 seconds or annual rate of ±10 seconds. This indicates the
degree of total difference in accuracy when the quartz watch is continuously
used for a month or a year. To the contrary, accuracy of the mechanical watch
is normally indicated as a "mean daily rate." Accuracy of the mechanical watch
slightly varies each day as it is inuenced by various conditions of use, and it is
normally unstable. Then it is required to judge whether the accuracy is
satisfactory or not by checking the mean values in the case of use for a week
to ten days, but not for only one day. For normal usage accuracy of Grand
Seiko mechanical watch, -1 to +10 seconds (+8 seconds for Cal. 9S86 and
9S85) per day are specied as target values. If the mean value exceeds the
abovementioned target value in the normal usage condition when the watch is
used for a week to ten days, we will adjust it.
＊ Adjustment is provided free of charge within two years after purchase. After the two-
year period, adjustments are charged. However, please note that the parts that are
age-deteriorated due to long duration of use may not be adjusted to your desired
accuracy. ⇒For details, refer to pages 28 and 33.
② Factor inuencing accuracy -1: Wound amount of the mainspring
In order to use the mechanical watch at better accuracies, it is required to supply a
constant strong energy wherever possible to respective parts. In the state where the
mainspring is fully wound, accuracy is stable, however, when the mainspring is unwound
to weaken energy to be supplied, the parts controlling accuracy tends to be externally
inuenced, and accuracy becomes unstable. In order to use a mechanical watch at a
steady accuracy, it is recommended to use it in a condition where the mainspring is
sufciently wound.
③ Factor inuencing accuracy -2: Temperature inuence
Mechanical watch parts are metal which slightly elongate and contract by
change in temperature, and this influences accuracy. Normally, under high
temperatures, it tends to lose time, and under low temperatures, it tends to
gain time.
④
Factor inuencing accuracy -3: Difference by position (orientation of a watch)
Parts related to accuracy of a mechanical watch are also inuenced by the
earth's gravity. For example, gain or loss differs when a watch is horizontally
placed and when it is vertically placed in the 12 o'clock up position. When the
watch is not worn on the wrist, accuracy errors that occur while wearing can
also be compensated to some extent according to the position. Try to place it
in various positions to nd the position appropriate to your watch.
After-sale service
Notes on guarantee and repair
○ Contact the retailer from whom the watch was purchased or SEIKO
CUSTOMER SERVICE CENTER for repair or overhaul.
○ Within the guarantee period, present the certicate of guarantee to receive
repair services.
○ Guarantee coverage is provided in the certicate of guarantee. Read
carefully and retain it.
○ For repair services after the guarantee period has expired, if the functions of
the watch can be restored by repair work, we will undertake repair services
upon request and payment.
Replacement parts
○ SEIKO makes it a policy to typically keep a stock of replacement parts for
this watch for 10 years. Replacement parts are those which are essential to
maintaining the functional integrity of the watch.
○ Please keep in mind that if original parts are not available, they may be
replaced with substitutes whose outward appearance may differ from the
originals.
Inspection and adjustment by disassembly and cleaning (overhaul)
○ Periodic inspection and adjustment by disassembly and cleaning (overhaul)
is recommended approximately once every 2 to 3 years in order to maintain
optimal performance of the watch for a long time.
○ The movement of this watch has a structure that consistent pressure is
applied on its power-transmitting wheels. To ensure these parts work
together properly, periodic inspection including cleaning of parts and
movement, oiling, adjustment of accuracy, functional check and
replacement of worn parts is needed. Inspection and adjustment by
disassembly and cleaning (overhaul) within 2 to 3 years from the date of
purchase is highly recommended for long-time use of your watch.
According to use conditions, the oil retaining condition of your watch
mechanical parts may deteriorate, abrasion of the parts may occur due to
contamination of oil, which may ultimately lead the watch to stop. As the
parts such as the gasket may deteriorate, water-resistant performance may
be impaired due to intrusion of perspiration and moisture. Please contact
the retailer from whom the watch was purchased for inspection and
adjustment by disassembly and cleaning (overhaul). For replacement of
parts, please specify “SEIKO GENUINE PARTS”. When asking for
inspection and adjustment by disassembly and cleaning (overhaul), make
sure that the gasket and push pin are also replaced with new ones.
○ When your watch is inspected and adjusted by disassembly and cleaning
(overhauled), the movement of your watch may be replaced.

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Guarantee
Within the guarantee period, we guarantee free repair/adjustment service
against any defects according to the following guarantee regulations, provided
that the watch was properly used as directed in this instruction booklet.
Guarantee coverage
○ The watch body (movement, case) and metallic band.
Exceptions from guarantee
In following cases, repair/adjustment services will be provided at cost even within the
guarantee period or under guarantee coverage.
○ Exchange of leather, urethane, or fabric band.
○ Troubles or damage to the case, glass, or band, caused by accidents or
improper usage.
○ Scratches or grime caused by use.
○ Troubles and damage caused by acts of God, natural disasters including
re, oods or earthquakes.
○ Text in certicate has been altered.
○ No certicate is presented.
Procedure to claim free repair services
○ For any defects under guarantee, submit the watch together with the
attached certicate of guarantee to the retailer from whom the watch was
purchased.
○ In the case where you cannot accept the guarantee from the retailer from
whom the watch was purchased due to gift-giving or relocation, etc., ask
SEIKO CUSTOMER SERVICE CENTER by attaching the certicate without
fail.
Others
○ For the watch case, dial plate, hands, glass, band etc., some alternative
parts may be used for repair if necessary. Refer to page 33 of this booklet
for retention period of the parts.
○ For length adjustment service of metallic band, ask the retailer from whom
the watch was purchased or SEIKO CUSTOMER SERVICE CENTER. Other
retailers may undertake the service on a chargeable basis or may not
undertake the service.
○ Free repair services are guaranteed only under the period and conditions
specified in the certificate of guarantee. It dose not affect specific legal
rights of a consumer.
Daily care
The watch requires good daily care
○ Do not wash the watch when its crown is at the extended position.
○ Wipe away moisture, sweat or dirt with a soft cloth.
○ After soaking the watch in seawater, be sure to wash the watch in clean
pure water and wipe it dry carefully.
※ If your watch is rated as “non-water resistant” or “water resistant for daily use”, do
not wash the watch.
→ Performance and type page 37 Water resistance page 37
Turn the crown from time to time
○ In order to prevent corrosion of the crown, turn the crown from time to time.
○ The same practice should be applied to a screw lock type crown.
→ Crown page12

36
37
English
Band
The band touches the skin directly and becomes dirty from sweat or dust.
Therefore, lack of care may accelerate deterioration of the band or cause skin
irritation or stain on the sleeve edge. The watch requires a lot of attention for
long usage.
Metallic band
○ Moisture, sweat or soil will cause rust even on a stainless steel band if they
are left for a long time.
○ Lack of care may cause a yellowish or gold stain on the lower sleeve edge
of shirts.
○ Wipe off moisture, sweat or soil with a soft cloth as soon as possible.
○ To clean the soil around the joint gaps of the band, wipe it out in water and
then brush it off with a soft toothbrush (Protect the watch body from water
splashes by wrapping it up in plastic wrap etc.).
○ Because some titanium bracelets use pins made of stainless steel, which
has outstanding strength, rust may form in the stainless steel parts.
○ If rust advances, pins may poke out or drop out, and the watch case may
fall off the bracelet, or the clasp may not open.
○ If a pin is poking out, personal injury may result. In such a case, refrain from
using the watch and request repair.
Leather band
○
A leather band is susceptible to discoloration and deterioration from moisture,
sweat and direct sunlight.
○
Wipe off moisture and sweat as soon as possible by gently blotting them up
with a dry cloth.
○
Do not expose the watch to direct sunlight for a long time.
○
Please take care when wearing a watch with light-colored band, as dirt is likely
to show up.
○
Refrain from wearing a leather band watch other than Aqua Free bands while
bathing, swimming, and when working with water even if the watch itself is
water-resistant enforced for daily use (10-BAR/20-BAR water resistant).
Polyurethane band
○ A polyurethane band is susceptible to discoloration from light, and may be
deteriorated by solvent or atmospheric humidity.
○ Especially a translucent, white, or pale colored band easily adsorbs other
colors, resulting in color smears or discoloration.
○ Wash out dirt in water and clean it off with a dry cloth. (Protect the watch
body from water splashes by wrapping it up in plastic wrap etc.)
○ When the band becomes less exible, have the band replaced with a new
one. If you continue to use the band as it is, the band may develop cracks
or become brittle over time.
Notes on skin irritation and allergy
Skin irritation caused by a band has various reasons such as allergy to metals
or leathers, or skin reactions against friction on dust or the band itself.
Notes on the length of the band
Adjust the band to allow a little clearance with your wrist to ensure
proper airflow. When wearing the watch, leave enough room to
insert a nger between the band and your wrist.
The case back shows the caliber and performance of your watch
<Regular case back> <See-through case back>
※ The above figures are examples. Both of them may be different from the figure on the case back of your watch.
8
5
Water resistant performance
Caliber Number
Refer to
"Water resistance".
page 37
The number to identify
the type of your watch
8
5
Water resistance
Refer to the table below for the description of each degree
of water resistant performance of your watch before using.
Indication on the
case back
Water resistant
performance Conditions of Use
No indication Non-water resistance Avoid drops of water or sweat
WATER RESISTANT Water resistance for
everyday life
The watch withstands
accidental contact with
water in everyday life
WARNING
Not suitable for swimming
WATER RESISTANT
5 BAR
Water resistance for
everyday life at 5
barometric pressures
The watch is suitable for
swimming.
WATER RESISTANT
10 (20) BAR
Water resistance for
everyday life at 10 (20)
barometric pressures
The watch is suitable for
diving not using an air
cylinder.