Water Resistance - Patek Philippe 5204 Mode D'emploi

The precision of a watch is determined by how
accurately it keeps the time. A watch that is fast
or slow is considered precise if the amount by
which it is fast or slow remains constant. Such
a deviation can be easily corrected. The last test
of accuracy takes place on your wrist. Your tem-
perament or the nature of your physical activi-
ties can cause slight irregularities. Fluctuations
in position, temperature, or air pressure, as well
as vibrations and other factors may also affect its
accuracy.
If you notice that your watch exhibits such ir-
regularities, please do not hesitate to take it to
an Authorized Patek Philippe Retailer or an Au-
thorized 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. However, if your watch
receives a blow to the crown or the crystal, its
water resistance may be impaired. Additionally,
we recommend that you prevent direct contact
with water if your watch has a leather strap.
CHANGING THE CASE BACK
Your watch comes with a sapphire-crystal case
back as well as with an interchangeable solid-metal
back. Only qualified master watchmakers at the
Patek Philippe workshops in Geneva are authorized
to exchange the backs.
SERVICE
We recommend that you have your watch ser-
viced every three to 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.
The watchmaker will completely disassemble the
movement and then clean and inspect all parts
and lubricate them in the reassembly process.
All functions of the watch will also be tested in
detail and the escapement regulated if necessary.
Finally, its rate accuracy will be monitored and
precision-adjusted for a further period of two
weeks.
The entire process may take several weeks because
each watch must undergo a complete series of
tests to fulfill the strict quality criteria of Patek
Philippe.
If you have any questions regarding the mainte-
nance of your watch or need the address of the
Authorized Patek Philippe Service Center nearest
you, contact our International Customer Service
department in Geneva, or visit www.patek.com.