Seiko Watch 7N36 User Guide

Cal. 7C46, 7N36, 7N85, V736  
INSTRUCTIONS  
BEDIENUNGSANLEITUNG  
INSTRUCTIONS  
ISTRUZIONI  
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3)  
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INSTRUCCIONES  
INSTRUÇÕES  
用法説明  
 
CONTENTS  
Page  
FEATURES ..................................................................................................................  
TIME SETTING ............................................................................................................  
CALENDAR SETTING .................................................................................................  
CROWN LOCK ............................................................................................................  
HOW TO USE THE ROTATING BEZEL .......................................................................  
BATTERY LIFE INDICATOR ........................................................................................  
BATTERY CHANGE .....................................................................................................  
PRECAUTIONS ...........................................................................................................  
TO PRESERVE THE QUALITY OF YOUR WATCH......................................................  
SPECIFICATIONS........................................................................................................  
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6
8
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10  
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12  
15  
16  
 
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SEIKO QUARTZ DIVER’S WATCH  
Cal. 7C46, 7N36, 7N85, V736  
FEATURES  
The SEIKO Quartz Diver’s Watches are specially designed for deep-sea diving.  
I WATER RESISTANCE  
The watches have been water-tested to 25, 75 or 125 atmospheres of pressure/bar as shown  
in the table below.  
Description  
on the dial  
Water-tested to:  
(atmosphere of pressure/bar)  
Helium Gas  
resistance  
Calibre No.  
7N36, 7N85, V736  
DIVER’S 200 m  
DIVER’S 600 m  
DIVER’S 1,000 m  
25  
75  
NO  
YES  
YES  
7C46  
125  
I HELIUM GAS RESISTANCE  
In addition to its excellent water resistant quality, Cal. 7C46 watch is designed for use in  
saturation diving using helium gas.  
 
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I TITANIUM AND CERAMIC CASE (Cal. 7C46 1,000 m model)  
A one-piece case consisting of a titanium inner part and a fine ceramic outer part makes the  
DIVER’S 1,000 m watch light and durable.  
I ROTATING BEZEL  
The rotating bezel can be rotated counterclockwise. Each click rotates one half minute or one  
minute depending on the model.  
*
To prevent accidental rotation, the rotating bezel is so designed that the rotation becomes harder in  
water. Also for safety’s sake, the rotating bezel rotates only counterclockwise, and thus the time  
measured is never shorter than the actual elapsed time.  
I BATTERY LIFE INDICATOR  
When the battery life nears its end, the second hand starts moving at two-second intervals  
instead of the normal one-second intervals. The watch, however, remains accurate during this  
period.  
Check the calibre number on the case back as shown below.  
Calibre No.  
 
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TIME SETTING  
1
2
3
Unscrew the crown by Pull out the crown all the Adjust the time by turning  
turning it counterclockwise. way to the second click the crown in the desired  
when the second hand is at direction.  
the 12 o’clock position.  
 
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4
Notes:  
1. Turn the hands past the 12 o’clock marker to determine  
whether the watch is set for the AM or PM period. If the  
calendar changes when the hour hand passes the 12  
o’clock marker, the time is set for AM. If the calendar does  
not change, the time is set for PM.  
2. To set the minute hand, advance it a few minutes ahead of  
the desired time and then turn it back to the exact minute.  
To set the exact time, push  
the crown back in to the  
normal position in accord-  
ance with a time signal for  
“00” seconds.  
 
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CALENDAR SETTING  
Pull out the crown to the first click.  
Cal. 7C46:  
Cal. 7N85:  
Turn the crown  
clockwise to set the  
date and counter-  
Turn the crown  
clockwise to set  
the date.  
Date  
Date  
clockwise to set the  
day of the week in  
the desired  
Day  
language.  
Cal. 7N36, V736:  
Turn the crown  
Notes:  
1. Do not change the day or the date during the  
time period below:  
counterclockwise to  
set the date and  
Day  
Cal. 7N85 : 9:00 P.M. ~ 1:00 A.M.  
Cal. 7C46, 7N36, V736 : 9:00 P.M. ~ 4:00  
A.M.  
clockwise to set the  
day of the week in  
the desired  
2. When the day shifts automatically to the next  
day, the other language will appear temporarily.  
Date  
language.  
 
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CROWN LOCK  
Push the crown back in to the normal position. While  
pressing the crown, turn it clockwise until it locks in place.  
Turn  
Press  
HOW TO USE THE ROTATING BEZEL  
I You can measure the elapsed time up to 60 minutes.  
1. Turn the rotating bezel to align the “III”  
mark to the minute hand.  
2. When time has elapsed, read the number  
on the rotating bezel.  
Example: Starting time  
Finishing time : 10:40  
Elapsed time 30 minutes  
:
10:10  
:
Elapsed time  
 
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BATTERY LIFE INDICATOR  
I The second hand moves at two-second intervals when the battery needs replacement.  
I I” mark inscribed on the case back shows the expected time for battery replacement.  
BATTERY CHANGE  
I Be sure to replace the battery as soon as it runs down, and not to leave a discharged battery  
inside the watch.  
I The battery needs to be replaced when you see the second hand moving at two-second  
intervals instead of the normal one-second intervals.  
*
The watch will, however, remain accurate while the second hand is moving at two-second intervals.  
I To show when the battery must be replaced, the expected time (month and year) for the first  
battery replacement is inscribed on the case back as shown in the illustration below.  
“•” mark showing the expected time for battery replacement.  
Year (2000)  
Each graduation of the scale represents three months.  
Note: The form of inscription on the case back specifying expected  
time of battery replacement may differ from model to model.  
 
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I When replacing the battery, we recommend that you contact an AUTHORIZED SEIKO  
SERVICE CENTER. In that case, after every battery change, a new “I” mark will be inscribed  
on the case back at the position corresponding to the next battery replacement time. Be sure  
to check the mark before using your watch again.  
I Refer to the table below for the proper battery and battery life corresponding to your watch.  
Battery life  
(Approx. years)  
Calibre No.  
Battery  
7C46  
7N36, V736  
7N85  
SEIKO SR43SW  
SEIKO SR920SW  
SEIKO SR621SW  
5
4
2
Note: Since the battery in your watch was inserted at the factory, its actual life, once in your possession,  
may be less than the specified period.  
 
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PRECAUTIONS  
Before diving, make sure that the watch operates normally and be sure to observe the  
precautions described below.  
Do not attempt to dive using the watch unless you have been properly trained in diving.  
Abide by the rules of diving for safetys sake.  
BEFORE DIVING  
I Do not use the watch for saturation diving using helium gas (except for Cal. 7C46).  
I 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 “ I ” mark aligns with the minute hand.  
• the time and calendar are appropriately set.  
If there are any malfunctions, we recommend that you contact an AUTHORIZED SEIKO SERVICE  
CENTER.  
WHILE DIVING  
I Do not operate the crown when the watch is wet or in water.  
I Take care not to hit the watch against hard objects such as rocks.  
 
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I Bezel rotation may become slightly harder in the water but this is not a malfunction.  
AFTER DIVING  
I After checking that the crown is screwed in completely, rinse the watch in fresh water, and wash out all  
seawater, soil, sand, etc.  
I After cleaning the watch in fresh water, be sure to wipe it thoroughly dry to prevent possible rust on the  
case.  
 
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LUMIBRITETM  
LumiBrite is a luminous paint that is completely harmless to human beings and the natural  
environment, containing no noxious materials such as radioactive substances.  
LumiBrite is a newly-developed luminous paint that absorbs the light energy of sunlight or artificial  
light in a short time and stores it to emit light in the dark.  
For example, if exposed to a light of more than 500 lux for approximately 10 minutes, LumiBrite  
can emit light for 5 to 8 hours.  
Please note, however, that, as LumiBrite emits the light it stores, the luminance level of the light  
decreases gradually over time. The duration of the emitted light may also differ slightly depending  
on such factors as the brightness of the place where the watch is exposed to light and the distance  
from the light source to the watch.  
When you make a dive in dark water, LumiBrite may not emit light unless it has absorbed and  
stored light sufficiently.  
Before diving, therefore, be sure to expose the watch to light under the conditions specified  
above, so that it fully absorbs and stores light energy. Otherwise, use the watch together with an  
underwater flashlight.  
< Reference data on luminance >  
(A) Sunlight  
[Fine weather]: 100,000 lux  
[Cloudy weather]: 10,000 lux  
(B) Indoor (Window side during daytime)  
[Fine weather]: more than 3,000 lux  
[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.  
 
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TO PRESERVE THE QUALITY OF YOUR WATCH  
I Repair of diver’s watches requires special expertise and equipment. If you find that your diver’s  
watch is malfunctioning, therefore, never attempt to repair it but immediately send it to a nearby  
SEIKO Service Center.  
I TEMPERATURES  
Your watch works with stable accuracy within a temperature range of 5° C and  
+60°C  
35° C (41° F and 95° F). Temperatures over 60° C (140° F) may cause battery  
leakage or shorten the battery life. Do not leave your watch in very low  
-10°C  
temperatures below –10° C (+14° F) for a long time since the cold may cause a  
slight time loss or gain. However, the above conditions will be corrected when  
the watch returns to normal temperature.  
I PERIODIC CHECK  
I CHEMICALS  
I MAGNETISM  
2 - 3  
Years  
N
S
Be careful not to expose the It is recommended that the watch  
watch to solvents, mercury, be checked once every 2 to 3 years  
cosmetic spray, detergents, by an AUTHORIZED SEIKO  
adhesives or paints. Otherwise, DEALER or SERVICE CENTER to  
the case, bracelet, etc. may ensure that the case, crown, gasket  
Your watch will be  
adversely affected by  
strong magnetism.  
Keep it away from  
close contact with  
magnetic objects.  
b e c o m e  
d i s c o l o r e d , and crystal seal remain intact.  
deteriorated or damaged.  
 
15  
I CARE OF CASE AND  
BRACELET  
I
PRECAUTION REGARDING  
CASE BACK PROTECTIVE FILM  
I SHOCKS &  
VIBRATION  
To prevent possible rusting Be careful not to drop If your watch has a protective film  
of the case and bracelet, wipe your watch or hit it and/or a sticker on the case back,  
them periodically with a soft against hard surfaces.  
dry cloth.  
peel them off before using your  
watch.  
SPECIFICATIONS  
1. Frequency of crystal oscillator ........... 32,768 Hz (Hz = Hertz … Cycles per second)  
2. Loss/gain (monthly rate) ..................... Cal. 7C46, 7N36, 7N85: Less than 15 seconds at normal  
temperature range (5° C ~ 35° C) (41° F ~ 95° F)  
Cal. V736: Less than 20 seconds at normal temperature  
range (5° C ~ 35° C) (41° F ~ 95° F)  
3. Operational temperature range .......... Cal. 7C46, 7N36, 7N85: –10° C ~ +60° C (14° F ~ 140° F)  
Cal. V736: –5° C ~ +50° C (23° F ~ 122° F)  
4. Driving system ................................... Step motor, 1 piece  
 
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5. Display system  
Time .............................................. Three hands (Hour, minute and second hands)  
Day ................................................ Displayed in numerals (Cal. 7C46, 7N36, V736)  
Date .............................................. Displayed in numerals  
6. Battery ............................................... (See “BATTERY CHANGE” on page 11)  
7. IC (Integrated Circuit) ......................... C-MOS-IC  
* The specifications are subject to change without prior notice for product improvement.  
 
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