Patek Philippe E 15 Mode D'emploi page 11

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rate accuracy
Patek Philippe quartz movements leave our work-
shops with a rate deviation ranging from +127 to
–18 seconds per year. Fluctuations in position, tem-
perature, or air pressure, the presence of magnetic
fields (as produced by most electronic devices,
metal detectors, household appliances, etc.) as
well as vibrations and other factors may also affect
their accuracy.
If you notice that your watch exhibits such irreg-
ularities, please do not hesitate to take it to an
Authorized Patek Philippe Retailer or an Authorized
Service Center where no effort will be spared to
assure that it is adjusted to meet your expectations.
water resistance
Your watch is fitted with different types of seals
and for some models with a screw-down crown
to protect the movement against the ingress of
dust and moisture and to prevent damage if it is
immersed in water. Nonetheless, we recommend
that you prevent direct contact with water if your
watch has a leather or satin strap.