iwc PORTOFINO CHRONOGRAPH Mode D'emploi page 27

Servicing your Portofino Chronograph
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Although the parts in this watch are all manufactured from
top-quality materials, a number of components are sub-
ject to natural wear and tear. It is particularly important to
ensure that the points at which wear occurs are always
well lubricated and that oil contaminated by me tal abra-
sion is regularly removed. For this reason, we recommend
that you have your watch serviced approximately every
five years. Please contact an authorised IWC Official
Agent or send your watch directly to the IWC Customer
Service Department in Schaffhausen.
Effective from January 2011.
Technical specifications subject to change.