iwc INGENIEUR PERPETUAL CALENDAR DIGITAL DATE-MONTH Operating Instructions Manual page 15

If your watch has a strap made of leather, textile or rubber
with a leather or textile inlay, make sure that the high­quality
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.
INGENIEUR PERPETUAL CALENDAR DIGITAL DATE-MONTH
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NOTE SERVICING YOUR
INGENIEUR PERPETUAL CALENDAR
DIGITAL DATE-MONTH
Although the parts in this watch are all manufactured from
top­quality materials, a number of components are subject
to natural wear and tear. It is particularly important to ensure
that the points at which wear occurs are always well lubri­
cated and that oil contaminated by metal abrasion is regu­
larly removed. For this reason, we recommend that you have
your watch serviced approximately every 5 years. Please
contact an authorized IWC Official Agent.
INGENIEUR PERPETUAL CALENDAR DIGITAL DATE- MONTH
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