Seiko 8F35 User Manual

Cal. 8F35

INSTRUCTIONS (P. 3)
BEDIENUNGSANLEITUNG (S. 21)
INSTRUCTIONS (P. 40)
ISTRUZIONI (P. 59)
INSTRUCCIONES (P. 78)
INSTRUÇÕES (P. 97)
用法説明 (116 頁)

You are now the proud owner of a SEIKO Analogue Diver’s Watch Cal. 8F35. For best results,
please read the instructions in this booklet carefully before using your SEIKO Analogue Diver’s
Watch. Please keep this manual handy for ready reference.

Sie sind jetzt stolzer Besitzer einer SEIKO Analog-Taucheruhr Kal. 8F35. Lesen Sie diese

English

Bedienungsanleitung aufmerksam durch, bevor Sie die SEIKO Analog-Taucheruhr verwenden, um
optimale Ergebnisse zu erhalten. Heben Sie die Bedienungsanleitung gut auf.

Vous voici l’heureux propriétaire d’une Montre de Plongée Analogique SEIKO Cal. 8F35. Pour
en obtenir d’excellents résultats, veuillez lire attentivement cette brochure avant d’utiliser cette
Montre de Plongée Analogique SEIKO. Conservez ces explications pour vous y référer en cas de
besoin.

Grazie per aver acquistato questo orologio analogico SEIKO per immersioni, Cal. 8F35. Per ottenere
i migliori risultati dall’orologio, leggere attentamente questo manuale di istruzioni prima di passare
ad utilizzare l’orologio stesso. Conservare poi il manuale a portata di mano per ogni eventuale
futura consultazione.

Usted es ahora un orgulloso propietario de un reloj analógico de buzo SEIKO Cal. 8F35. Para los
mejores resultados, por favor lea cuidadosamente las instrucciones de este librito antes de
utilizar su reloj analógico de buzo SEIKO. Le rogamos guardar este manual a mano para ulterior
referencia.

Você pode agora sentir-se orgulhoso de ter adquirido o Relógio do Mergulhador Analógico SEIKO
Cal. 8F35. Para obter os resultados máximos, solicitamos-lhe que, antes de usar o seu Relógio do
Mergulhador Analógico SEIKO, leia cuidadosamente as instruções contidas neste opúsculo. E
guarde este manual para futuras referências.

2

CONTENTS

Page

HOW TO USE THE SCREW LOCK TYPE CROWN .................................................. 6

TIME/DATE SETTING ............................................................................................... 7

HOW TO CHECK THE CALENDAR .......................................................................... 8

ROTATING BEZEL ................................................................................................... 11

PRECAUTIONS FOR DIVING ................................................................................... 12

NOTES ON USING THE WATCH ............................................................................. 14

BATTERY CHANGE .................................................................................................. 17

SPECIFICATIONS ..................................................................................................... 20

✩

For the care of your watch, see “TO PRESERVE THE QUALITY OF YOUR
WATCH” in the attached Worldwide Guarantee and Instruction Booklet.

ENGLISH

English

3

CAL. 8F35

English

PERPETUAL CALENDAR

● Once set, the calendar automatically adjusts for odd and even months including

February of leap years up to February 28, 2100.

● It indicates the month, date and the number of years since the last leap year.

HIGH ACCURACY

● Loss/gain : Annual rate of less than 20 seconds

200 METER WATER RESISTANCE

● Suitable for scuba diving.

ROTATING BEZEL

● Can measure elapsed time during diving (up to 60 minutes).

SCREW LOCK TYPE CROWN

4

English

Minute handHour hand

Second hand

Date

a b c d

a: Screwed-in position
b: Normal position
c: First click
d: Second click

CROWN

[Screw lock type]

Before using the watch:

● Because the calendar is preadjusted at the factory, you only need to set the time

and date, and the calendar will automatically update itself.

● Before using the watch, be sure to read “HOW TO CHECK THE CALENDAR”,

and then set the time and date correctly following the procedure in “TIME/DATE
SETTING”.

* In case the calendar indication is not correct after the time/date setting is made, consult the

retailer from whom the watch was purchased or an AUTHORIZED SEIKO DEALER.

5

HOW TO USE THE SCREW LOCK TYPE CROWN

● To unscrew the crown:

Turn it counterclockwise.

English

● To screw in the crown:

With the crown at normal position,
turn it clockwise while pressing it.

WARNING

While you are underwater, never unscrew the crown or pull it out.

6

TIME/DATE SETTING

➠

➠

English

CROWN

Unscrew.

▼

Pull out to second click when Second hand
is at the 12 o’clock position.

▼

Turn in either direction to set the time and
date.

▼

Push in in accordance with a time signal.

▼

Screw in completely.

7

HOW TO CHECK THE CALENDAR

English

8

Second hand

CROWN

Unscrew.

▼

Pull out to first click, and push back in to
normal position within a second.

● The watch shows the calendar in the following

order:

1. Leap year

(Second hand)

▲

➠

➠

▼

After checking the calendar, screw in com­pletely.

2. Month

(Calendar frame)

▲

3. Date

(Calendar frame)

1. Leap year indication

The second hand moves quickly at five-second intervals and stops to indicate the
number of years that have passed since the last leap year. Before pulling out the
crown to the first click, check and remember where the second hand is so that you can
read how many seconds it has advanced.

5 seconds 10 seconds 15 seconds 20 seconds

Quick

movement

of

second hand

English

Number of years

since

the last leap year

Year

1 year 2 years 3 years

1997
2001
2005

2093
2097

1998
2002
2006

2094
2098

·

·

·

·

·

·

1999
2003
2007

2095
2099

·

·

·

4 years

(leap year)

2000
2004
2008

·

·

·

2096

–

9

2. Current month

The current month is shown in the calendar frame for
5 seconds.

* January is represented by “1”, February “2”, and so on.

English

3. Current date

The numeral in the calendar frame returns to the
current date.

1

➡

Ex.: November 1st

11

➡

1

* When the month and date are represented by the same

numeral as in the case of “January 1st”, “February 2nd” and
so on, the numeral in the calendar frame quickly advances
and moves back by one to indicate that the month and date
numerals are identical.

★ After the calendar has been displayed, the second hand starts moving quickly and

then resumes normal movement.

10

5

Ex.: May 5th

➡

➡

5

ROTATING BEZEL

● The rotating bezel can show up to 60 minutes of elapsed time. By setting it before

diving, you can know how many minutes you are underwater.

English

1 Turn the rotating bezel to align

its “ ” mark with the minute
hand.

* The rotating bezel turns only counterclockwise for safety’s sake.

2 Read the number on the rotating

bezel that the minute hand points
to.

Elapsed time

Start

20 minutes
have elapsed.

11

PRECAUTIONS FOR DIVING

English

CAUTION

Diving is an inherently hazardous form of recreation and it is essential that you
strictly observe all instructions for use and maintenance of the watch set forth in
this booklet for safety’s sake. DO NOT ATTEMPT TO DIVE USING THIS WATCH
UNLESS YOU HAVE BEEN PROPERLY TRAINED IN DIVING.

Do not use the watch for saturation diving using helium gas.

BEFORE DIVING

● Check that:

• the watch operates 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 date are properly indicated.

• the second hand is moving at one-second intervals.

If there are any malfunctions, we recommend that you contact an AUTHORIZED SEIKO SERVICE
CENTER.

12

WHILE DIVING

● Do not operate the crown when the watch is wet or in water.

● Take care not to hit the watch against hard objects such as rocks.

● Bezel rotation may become slightly harder in the water but this is not a malfunction.

AFTER DIVING

● After checking that the crown is screwed in completely, rinse the watch in fresh water, and wash out

all seawater, soil, sand, etc.

● After cleaning the watch in fresh water, be sure to wipe it thoroughly dry to prevent possible rust on

the case.

English

13

NOTES ON USING THE WATCH

TIME/DATE SETTING

● When setting the date, turn the crown counterclockwise to advance the date and clockwise to move

it back. The date changes one day by turning the hour hand two full circles.

English

● The date changes between 11:45 p.m. and 0:30 a.m. while the watch is in operation and between 9:00

p.m. and 3:00 a.m. when it is changed manually by turning the hands. Therefore, note the following.

[AM/PM checking]

When setting the hour hand, check that AM/PM is correctly set.
* When setting the time by advancing the hands, turn the hour hand past the 3 o’clock marker. If the

date advances, the time is set for the AM period. If it does not change, the time is set for the PM
period.

* When setting the time by turning back the hands, turn the hour hand past the 9 o’clock marker. If

the date moves back, the time is set for the PM period. If it does not change, the time is set for
the AM period.

[Setting the time between 9:00 p.m. and 3:00 a.m.]

* If the time is adjusted to the time period between 9:00 p.m. and 3:00 a.m., the date may not change

properly. The watch, however, will indicate the date properly after 3:00 a.m.

* To prevent this from occurring, first turn back the hour hand past 9:00 p.m., checking that the date

moves back to the previous day, and then, advance the hands to the desired time.

● When setting the minute hand, advance it 4 to 5 minutes ahead of the desired time and then turn it

back to the exact time.

HOW TO CHECK THE CALENDAR

● If the crown is pulled out to the second click instead of the first click and pushed back in to the normal

position, the watch will not show the calendar.

● Do not leave the crown at the first or second click when you use the watch, as this will shorten the

battery life.

14

● Note on the leap second

One day normally is said to consist of 86,400 seconds. In fact, it can be longer or shorter than
this because of irregular changes in the rotation cycle of the earth. When the accumulated
fluctuations in the length of a day total plus or minus one second, one second must then be
added or subtracted as a correction factor. This is known as a “leap second”.

The leap second correction is executed every year or two simultaneously throughout the
world on the basis of information collected by astronomical observatories all over the world.
The correction is effected between 11:59'59" p.m. and 0:00'00" a.m. GMT either on December
31 or on June 30, during which one second is added or subtracted.

When this happens, please adjust your watch accordingly.
Please refer to your newspaper for information on the leap second.

English

LUMIBRITE

LumiBrite is a newly developed luminous paint that is completely harmless to human beings and
the natural environment, containing no noxious materials such as radioactive substances.
LumiBrite absorbs the 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.

TM

15

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.

English

< 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 fluorescent 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 CORPORATION.

16

BATTERY CHANGE

8

Years

* For safety’s sake, the watch will also undergo a strict check at the time of battery change. In addition to

battery change, water resistant quality of the watch is checked and the gasket will be replaced with a new
one if necessary. Therefore, it will take approximately 10 days before the watch is returned to you, and
the checking may be made at cost.

* If the watch is left with the crown at the first or second click, if the calendar checking function is used

frequently, and/or if the watch is left in temperatures outside the normal temperature range (5° C ~ 35
C or 41° F ~ 95° F) for a long time, the battery life may be less than the specified period.

● Expected time for battery change

• To show when the battery must be replaced, the expected time (month and year)
for the first battery change is inscribed on the case back as shown in the illustration
on the next page.

• When replacing the battery, we recommend that you contact an AUTHORIZED
SEIKO SERVICE CENTER. In that case, after every battery change, a new “●” mark
will be inscribed on the case back at the position corresponding to the next battery
change time. Be sure to check the mark before using your watch again.

The miniature battery which powers your watch should last approximately
8 years. However, because the battery is inserted at the factory to check
the function and performance of the watch, its actual life once in your
possession may be less than the specified period. When the battery expires,
be sure to replace it as soon as possible to prevent any malfunction. For
battery replacement, we recommend that you contact an AUTHORIZED
SEIKO DEALER and request SEIKO CR2412 battery.

°

English

17

Ex.) Expected time for battery change: April through June, 2007

English

Each graduation of the scale
represents three months.

Year (2007)

“●” mark showing the expected
time for battery change

● Battery life indicator

When the second hand starts moving at two-second intervals instead of the normal

one-second interval, replace the battery with a new one as soon as possible.
Otherwise, the watch will stop operating in two weeks.

* For safety’s sake, never use the watch for diving while the second hand is moving at two-second

intervals.

* When you make a long voyage, check the expected time for battery change referring to “● Expected

time for battery change” above, and replace the battery with a new one if necessary before setting off.
* The time accuracy is not affected even if the second hand is moving at two-second intervals.
* While the second hand is moving at two-second intervals, the date will not change and the watch will

not show the calendar even if the crown is pulled out to the first click.

18

*

If the watch is left in very low temperatures, the second hand may temporarily start moving at two-second
intervals and the date does not change to the next. When the watch returns to normal temperature,
however, this condition will be corrected and the correct date will be displayed on the next day.

If the second hand still moves at two-second intervals and the date does not change properly, replace
the battery with a new one.

● Checking and adjustment of the calendar after battery change

The calendar function is not affected by battery changes. However, after the battery
is replaced with a new one, be sure to check that the calendar is correct. (See “HOW
TO CHECK THE CALENDAR”)

If the watch does not indicate the leap year, month and date correctly, have the watch
adjusted by an AUTHORIZED SEIKO DEALER.

WARNING

● Do not remove the battery from the watch.

● If it is necessary to take out the battery, keep it out of the reach of children. If

a child swallows it, consult a doctor immediately.

CAUTION

● Never short-circuit, heat or otherwise tamper with the battery, and never

expose it to fire. The battery may burst, become very hot or catch fire.

● The battery is not rechargeable. Never attempt to recharge it, as this may cause

battery leakage or damage to the battery.

English

19

SPECIFICATIONS

1 Frequency of crystal oscillator ................ 196,608 Hz (Hz = Hertz … Cycles per second)

2 Loss/gain (Annual rate) ............................ ±20 seconds when used on the wrist approximately 12

English

3 Operational temperature range ............... –10° C ~ +60° C (14° F ~ 140° F)

4 Driving system ........................................ Step motor for the time indication

5 Battery .................................................... SEIKO CR2412, 1 piece

6 Battery life indicator

7 IC (Integrated Circuit) .............................. C-MOS-LSI, 1 piece

8 Magnetic resistance ................................ 4,800 A/m (60 gauss)

9 Water resistance ..................................... Withstands water pressure to a depth of 200 m and is

* The specifications are subject to change without prior notice for product improvement.

20

hours a day, at normal temperature range (5° C ~ 35° C) (41°
F ~ 95° F)

* Monthly rate of loss/gain may amount to approximately 4

seconds depending on the condition of use.

Ultrasonic motor for the calendar indication

therefore suitable for scuba diving.