Citizen 9051, Инструкция по эксплуатации

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This watch runs using the power of the mainspring.
• Once the mainspring is wound fully, it will run for about 42 hours.
• Sufficient winding ensures stable and accurate movement.
Winding the mainspring
This watch is an automatic mechanical watch. (You can also wind the mainspring
manually.) The mainspring is wound by swinging your arm. It is recommended to
wear the watch for more than 8 hours a day. If you do not move your arms much
in your daily life, for example you spend a lot of time sat at a desk, the mainspring
may not be wound sufficiently. In such cases, wind the mainspring manually.
Mainspring
CAUTION
This watch is equipped with the screw down crown to get higher water resistance.
Rotate the crown counterclockwise to unlock it before its operation. After the
operation, push the crown in to the normal position, then rotate it clockwise
while pressing it toward the case to tighten the screw firmly.