Seiko Watch 8F35 User Guide

Cal. 8F35  
INSTRUCTIONS  
(P.  
3)  
BEDIENUNGSANLEITUNG  
INSTRUCTIONS  
ISTRUZIONI  
(S. 21)  
(P. 40)  
(P. 59)  
(P. 78)  
(P. 97)  
(116 )  
INSTRUCCIONES  
INSTRUÇÕES  
用法説明  
 
CONTENTS  
Page  
HOW TO USE THE SCREW LOCK TYPE CROWN ..................................................  
TIME/DATE SETTING...............................................................................................  
HOW TO CHECK THE CALENDAR ..........................................................................  
6
7
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.  
3
 
CAL. 8F35  
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
Hour hand  
Minute hand  
Date  
Second hand  
a: Screwed-in position  
b: Normal position  
c: First click  
CROWN  
d: Second click  
[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:  
To screw in the crown:  
With the crown at normal position,  
turn it clockwise while pressing it.  
Turn it counterclockwise.  
WARNING  
While you are underwater, never unscrew the crown or pull it out.  
 
6
TIME/DATE SETTING  
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  
CROWN  
Unscrew.  
Second hand  
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)  
2. Month  
(Calendar frame)  
3. Date  
(Calendar frame)  
After checking the calendar, screw in com-  
pletely.  
 
8
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  
Number of years  
since  
the last leap year  
4 years  
(leap year)  
1 year  
2 years  
3 years  
1997  
2001  
2005  
·
1998  
2002  
2006  
·
1999  
2003  
2007  
·
2000  
2004  
2008  
·
Year  
·
·
·
·
·
·
·
·
2096  
2093  
2097  
2094  
2098  
2095  
2099  
9
 
2. Current month  
The current month is shown in the calendar frame for  
5 seconds.  
Ex.: November 1st  
* January is represented by “1”, February “2”, and so on.  
3. Current date  
The numeral in the calendar frame returns to the  
current date.  
* When the month and date are represented by the same  
numeral as in the case of January 1st, February 2ndand  
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.  
Ex.: May 5th  
After the calendar has been displayed, the second hand starts moving quickly and  
then resumes normal movement.  
 
10  
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.  
1
Turn the rotating bezel to align  
2
Read the number on the rotating  
bezel that the minute hand points  
to.  
its “  
mark with the minute  
hand.  
Start  
20 minutes  
have elapsed.  
Elapsed time  
* The rotating bezel turns only counterclockwise for safety’s sake.  
11  
 
PRECAUTIONS FOR DIVING  
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.  
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.  
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.  
LUMIBRITETM  
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.  
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.  
< 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  
[Rainy weather]: less than 1,000 lux  
[Cloudy weather]: 1,000 to 3,000 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  
The miniature battery which powers your watch should last approximately  
8
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.  
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.  
17  
 
Ex.) Expected time for battery change: April through June, 2007  
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.  
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  
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.  
3
4
Operational temperature range ............... –10° C ~ +60° C (14° F ~ 140° F)  
Driving system ........................................ Step motor for the time indication  
Ultrasonic motor for the calendar indication  
5
6
7
8
9
Battery .................................................... SEIKO CR2412, 1 piece  
Battery life indicator  
IC (Integrated Circuit) .............................. C-MOS-LSI, 1 piece  
Magnetic resistance ................................ 4,800 A/m (60 gauss)  
Water resistance ..................................... Withstands water pressure to a depth of 200 m and is  
therefore suitable for scuba diving.  
* The specifications are subject to change without prior notice for product improvement.  
 
20  

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