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MAINTENANCE
CERTIFICATE OF ORIGIN
Your watch is delivered with a certificate of origin
that indicates the movement and case numbers. The
certificate is valid only if it is dated, signed by an
Authorized Patek Philippe Retailer, and completed
with your name. It guarantees the authenticity of
your watch and validates your warranty privileges.
The unique movement and case numbers of each
watch are transcribed into the workshop journals.
With this information, you may have yourself
entered in the Patek Philippe Register of Owners
International Patek Philippe
and will obtain the
Magazin
e free of charge.
PATEK PHILIPPE SEAL
As an all-encompassing hallmark of quality,
the Patek Philippe Seal applies to the entire
watch, including the movement, case, dial,
hands, pushers, strap, and clasp as well as to all other
facets that contribute to the precision and aesthetic
perfection of the timepiece. It covers the technical,
functional, and aesthetic factors, but also rate accu-
racy, dependability, and customer service quality.
Additionally, it reflects the maker's know-how and
all other assets needed for the development, produc-
tion, and long-term maintenance of an extraordinary
timekeeping instrument.
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QUALITY CONTROL
The movements and completely assembled watches
are subject to a series of technical tests and visual
inspections to verify their rate accuracy, winding
speed, power reserve, reliability, water resistance,
and overall appearance. Once assembled, your self-
winding watch will run for several weeks before
leaving the workshops; it fully complies with the
stringent criteria of the Patek Philippe Seal.
ACCURACY
The rate accuracy of Patek Philippe watches is ver-
ified in several phases of manufacturing, both with
uncased and fully cased movements. The final test
is performed with a wrist motion simulator and
the results must conform to the following Patek
Philippe precision benchmarks:
The rate accuracy of calibers with a diameter of 20 mm
or larger must range within -1 and +2 seconds per
24 hours.
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. Consequently, the final
test of accuracy takes place on your wrist. Your
temperament or the nature of your physical activities
can cause slight irregularities. Fluctuations in
position, temperature, 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 its accuracy. If you notice that your watch
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