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About mechanical watches
The accuracy of a mechanical watch in this instruction manual is static accuracy at
normal temperatures.
Accuracy of a mechanical watch may not be kept within a normal accuracy range
due to using conditions such as below.
A mechanical watch keeps its accuracy best when its
Winding amount of the
mainspring is sufficiently wound.
mainspring
Accuracy of a mechanical watch varies affected by gravity.
The accuracy varies as the result that the watch may take
Posture of the watch
various attitude while worn and gravitate to a different
direction every moment.
Metal parts are used for the part for keeping accuracy in
a mechanical watch. The accuracy varies affected by their
thermal expansion and contraction and change of physical
Temperature
characteristics of a spring owing to temperature variation.
*It is recommended to use this watch within +8 °C - +38 °C
(46 °F - +100 °F).
Metal parts are used in a mechanical watch. Magnetism
affects them and accuracy of the watch in consequence. Do
Magnetism
not bring it close to things which have or generate strong
magnetism.
Strong shocks and continuous vibration may also affect the
Impact and others
accuracy.
Taking care of magnetism of your surroundings
The most important part in a mechanical watch for its time accuracy is "balance".
The balance has a very small and thin spring (hairspring). It oscillates in a certain
period of time to keep accuracy of a mechanical watch.
Oscillation of the hairspring
Oscillation of the hairspring may fluctuate and total movement of a mechanical
watch is consequently affected much if a thing with strong magnetism exists its
nearby.
Everyday items with strong magnetism
Notebook computer, smartphone, tablet, tablet cover, speaker, earphones,
headphones, clasps of handbags, magnets used in the latches of refrigerator doors,
magnetic health devices, etc.
Keep the devices and equipment at least 5 cm away from the watch.
Caring of a mechanical watch
Mechanical watches may become inaccurate due to insufficient lubrication or worn
parts. Have the watch disassembled and cleaned (overhaul) every 2-3 years (charge
basis). It may be difficult to restore the watch from degradation after long-term use
to its initial performance even after repairs.
Troubleshooting
Movement of a hand seems strange
Symptom
Remedies
The mainspring may not be wound enough. Wind up the
No hands move.
mainspring manually.
The watch cannot be operated
Symptom
Remedies
The crown and
Screw down crown and buttons must be unlocked before
buttons do not
operation.
work.
Mainspring
Symptom
Remedies
The mainspring
If you do not move your arms much in your daily life,
is not wound even
for example you spend a lot of time sat at a desk, the
after wearing the
mainspring may not be wound sufficiently. In such cases,
watch for a certain
wind the mainspring manually.
period of time.
Time
Symptom
Remedies
I have forgotten
Rotate the rotating bezel to set its "24" to the 12 o'clock
which time zone
position and read the time of the 24-hour hand.
the 24-hour hand
Use the time read to obtain the time difference from the
is set to.
current place after that.
Calendar
Symptom
Remedies
The calendar
changes in the
AM/PM setting is incorrect.
daytime.
Changing rotation direction of the crown while the date
The position of
indication is moving may result in incorrect indication.
date indication is
Move the hour hand again to make the date indication
incorrect.
correct.
9054 instruction manual
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