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English
28
Problem Possible causes Solutions
The watch gains/loses
time temporarily.
The watch has been left
in extremely high or low
temperatures for a long time.
Normal accuracy will resume
when the watch returns to normal
temperature.
The watch was brought
into close contact with a
magnetic object.
Normal accuracy will resume when the
watch is kept away from close contact
with the magnetic source. If this
condition persists, consult the retailer
from whom the watch was purchased.
You dropped the watch, hit
it against a hard surface or
wore it while playing active
sports. The watch was
exposed to strong vibrations.
Normal accuracy will not resume.
Consult the retailer from whom the
watch was purchased.
The watch has not been
overhauled for more than
3 years.
Consult the retailer from whom the
watch was purchased.
The glass is blurred and
the blur persists for a
long time.
Water got inside the watch
due to the deterioration of
the gasket, etc.
Consult the retailer from whom the
watch was purchased.
The stopwatch minute
hand and stopwatch
hour hand move while
you are setting the
watch to the current
time.
Time setting is done
while the stopwatch is
operating.
Push the crown back in to the normal
position. And then, stop and reset the
stopwatch. After that, if you wish to
set the time, follow the procedures in
“HOWTOSETTHETIMEANDDATE”
section of this booklet.
• Forthesolutionoftroublesotherthanlistedabove,contacttheretailerfromwhomthewatchwas
purchased.
ACCURACY OF MECHANICAL WATCHES
● The accuracy of mechanical watches is indicated by the daily rates of one week
or so.
● The accuracy of mechanical watches may not fall within the specified range of
time accuracy because of loss/gain changes due to the conditions of use, such as
the length of time during which the watch is worn on the wrist, arm movement,
whether the mainspring is wound up fully or not, etc.
● The key components in mechanical watches are made of metals which expand
or contract depending on temperatures due to metal properties. This exerts an
effect on the accuracy of the watches. Mechanical watches tend to lose time at
high temperatures while they tend to gain time at low temperatures.
● In order to improve accuracy, it is important to regularly supply energy to the
balance that controls the speed of the gears. The driving force of the mainspring
that powers mechanical watches varies between when it is fully wound and
immediately before it is unwound. As the mainspring unwinds, the force
weakens.
Relatively steady accuracy can be obtained by wearing the watch on the wrist
frequently for the self-winding type and winding up the mainspring fully everyday
at a fixed time to move it regularly for the wind-up mechanical type.
● When affected by strong external magnetism, a mechanical watch may loss/gain
time temporarily. The parts of the watch may become magnetized depending on
the extent of the effect. In such a case, consult the retailer from whom the watch
was purchased since the watch requires repair, including demagnetizing.