CORUM CO502 Mode D'emploi page 17

3.2 SPECIFIC PRECAUTIONS
PRECISION
The precision of a mechanical movement depends on several factors, but essential-
ly on the balance-spring/balance/escapement system, known as the regulating
organs.
Although CORUM movements are assembled with the utmost care, their precision
can be affected by the influence of gravity, magnetic fields, shocks and the fact that
the oil applied between many mobile elements can age. The rate regularity can be
measured by the variations between the different positions of the watch.
Your daily activities will have a direct influence on the precision of the movement. If
your watch is significantly fast or slow, please take it to a CORUM authorized dealer
who will make out the necessary adjustment.
A complete check of the watch is advised every 3 to 5 years depending on the
type of use made by the wearer, or even sooner if the time shown on the watch
becomes irregular.
Variation of quartz movement models is 2 to 3 minutes per year, subject to battery
life.
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WATER-RESISTANCE
Your CORUM watch is water-resistant to the depth indicated in the technical
specification.
Only watches marked "DIVER'S WATCH" on the dial can really be used for profes-
sional diving as these fully comply with the international standards for divers'
watches.
In order to guarantee the water-resistance of your watch, please do not forget to
push back or screw down the crown against the case after each operation. Never
use the crown when the timepiece is in contact with water (sprayed or immersion).
Please note that leather straps are not suitable for activities in water.
We advise you to have the water-resistance of the timepiece checked regularly by
a CORUM authorized dealer or authorized service center, in principle at least once a
year and imperatively before a period of intense use.
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