The stringent and systematic inspections conducted by the workshops testify to extremely high standards that guarantee the exceptional quality and reliability of each Patek Philippe watch.
All movements and watches are subject to a series of technical tests and visual inspections to verify their rate accuracy, winding function integrity, power reserve, water resistance and overall appearance. On average, a self-winding watch runs for 1,200 hours before it leaves the Patek Philippe workshops. It is not delivered until it thoroughly fulfills all of our quality requirements, agreed to be the most stringent in the entire Swiss watchmaking industry.
The accuracy of a watch is determined by the regularity of its rate. 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 easily be corrected. However, your personality and your physical activity profile may also result in deviations of rate accuracy. The sports that you play, your profession, and whether you take off your watch at night or wear it on the right or left wrist can influence the accuracy of a mechanical movement. Consequently, the last test of accuracy takes place on your wrist. Changes in position as well as variations of temperature, air pressure, magnetic fields, vibrations and many other factors may also affect its accuracy. If you notice that your watch exhibits rate accuracy deviations, 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.