DETOMASO WALZ DT-W1002 Manuel D'instructions page 15

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Note on automatic watches
The automatic models are mechanical watches without a battery.
Mechanical watches are subject to all kinds of influences from the
environment and the wearer. These include fluctuations in temperature,
varying air pressure, vibration and strain caused by the wearer. Unlike with
quartz watches, slight tolerance is normal.
Automatic watches are wound during use. There is an oscillating weight in
the clockwork which winds the mainspring when your arm moves. In order for
your watch to work properly the mainspring has to be wound slightly. All that is
necessary is for you to wear the watch and move your arm a little.
The watch starts automatically. As long as the watch is worn it winds itself.
As soon as you take your watch off, the self-winding function stops working.
If the watch has been worn long enough for it to be fully wound it will,
however, run for many hours before it stops.
It is not a problem to take the watch off over night. The period of time between
the mainspring being fully wound and completely unwound is called the power
reserve. If you put the watch back on in the morning the watch will be automati-
cally wound again during use. If the watch stops completely, then please simply
follow the instructions above.
You may also wind your watch manually. While the crown is in the normal positi-
on wind the watch by turning the crown clockwise.
Be careful not to overwind the watch.
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