Patek Philippe CALIBER CH 29-535 PS Q Mode D'emploi page 20

If you notice that your watch exhibits such irreg-
20
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
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 strap.
It is advisable to have a water-resistance test car-
ried out every year on your watch. This is a simple
procedure that takes only a few minutes at a prop-
erly equipped point of sale.
changing the caseback
If your watch was delivered with two interchangea-
ble case backs, please note that only an Authorized
Patek Philippe Retailer or an Authorized Service
Center is qualified to exchange the case backs.
service
We recommend that you have your watch serviced
every five years. For this purpose, we suggest that
you bring or send your watch to an Authorized
Patek Philippe Retailer or an Authorized Service
Center. This gives you the assurance that your
watch will be entrusted to hands of a qualified
Patek Philippe watchmaker in Geneva or at one of
the Authorized Service Centers worldwide.