IWC Schaffhausen PILOT'S WATCH TIMEZONER SPITFIRE Mode D'emploi page 31

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Recommendation: Your authorized IWC Official Agent must carry out a water-resistance test when-
ever your IWC watch is opened and serviced.
NOTE
If your watch has a strap made of leather, textile or rubber with a leather or textile inlay, make sure that
the high-quality strap does not come into contact with water, oily substances, solvents, cleaning agents
or cosmetic products. This way you can prevent discoloration and premature ageing of the material.
HOW OFTEN SHOULD MY WATCH BE SERVICED?
The optimal service cycle for your IWC timepiece is exclusive to your watch and unique lifestyle. The
necessary interval between services will be determined by your individual wearing habits; frequency of
wear, your environment/s, and the intensity of physical activity you engage in. Your fine mechanical
timepiece is an extension of yourself and will run well for as long and smoothly as it is treated.
Therefore, we simply recommend you to continue wearing your watch for as long as pleases you and
to only entrust it for a service if you notice a deviation from the regular performance, function or
timekeeping. It will then be our pleasure to reinstate the premium performance with the
suitable service.
PILOT'S WATCH TIMEZONER SPITFIRE