Grand Seiko Spring Drive 9R01, Руководство по эксплуатации

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Differences between the Spring Drive and mechanical watch
For the Spring Drive, the mainspring is wound and the unwinding
power of the mainspring moves the hands in the same manner as
the mechanical watch.
It differs from the mechanical watch only in the speedregulating
unit (mechanism for controlling accuracy).
◎ Temperature change
Accuracy of mechanical watches depends on a balance spring attached to a part called the balance. This part has
properties for expanding and contracting with temperature changes, and influences the accuracy of a watch. Accuracy
of the Spring Drive is never largely influenced by temperature changes like that of mechanical watches since the crystal
oscillator controls it.
(Note) Accuracy of the Spring Drive
Average monthly rate of ±15 seconds (equivalent to daily rate of ±1 second) * is the accuracy of a watch when
it is worn on a wrist at a temperature range between 5°C and 35°C.
* For Cal. 9R01, the average monthly rate is ±10 seconds (equivalent to daily rate of ±0.5 second).
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◎ Difference in position
For mechanical watches, the accuracy is influenced even by a difference in position or direction of a watch. This is
also caused by the balance that controls the accuracy of mechanical watches. Due to the difference in position, the
area where the shaft of the balance contacts with other parts differs, and such differences in resistance influence the
accuracy. As the Spring Drive adopts a crystal oscillator not a balance, the accuracy is not influenced by a difference
in position.
◎ Impact
Mechanical watches are susceptible to impacts. If a mechanical watch was subject to impact, amplitude of vibration
of the balance (angle for which the balance rotates right and left) is changed, and even the form of the balance spring
is changed. In this regard, the Spring Drive is superior to mechanical watches in impact resistance because it adopts
a crystal oscillator not a balance.
◎ Overhaul
Parts that become worn or severely damaged are the balance, pallet fork, and escape wheel & pinion which are
collectively called the speed-regulating unit or escapement. These parts “come into contact or collide” mutually and
control unwinding of the mainspring.
For the Spring Drive, wear and damage occur less than mechanical watches since the spinning speed of the glide
wheel is adjusted by a “contact-free” electromagnetic brake. However, as the structure of gear train is the same as
mechanical watches, abrasion powder may be generated by contact of the wheels & pinions. An overhaul is
recommend every three to four years.
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■ HANDLING CAUTIONS
b
WARNING
To indicate the risks of serious consequences such as severe injuries unless the following
safety regulations are strictly observed.
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 Grand Seiko international service network
mentioned on CERTIFICATE OF GUARANTEE or our website.
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.
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b
CAUTION
To indicate the risks of light injuries or material damages unless the following safety
regulations are strictly observed.
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°C or rises
above 35°C for a long time
○ Places affected by strong magnetism or static
electricity
○ Places affected by strong vibrations
○ Places of high humidity
○ Dusty places
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
○ Do not disassemble or tamper with the watch.
○ Keep 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.
○ 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.
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