IWC Schaffhausen DA VINCI AUTOMATIC Mode D'emploi page 22

Servicing your Da Vinci Automatic
Although the parts in this watch are all manufactured
from top-quality materials, a number of components are
subject to natural wear and tear. It is particularly impor-
tant to ensure that the points at which wear occurs are
always well-lubricated and that oil contaminated by
metal abrasion is regularly removed. For this reason, we
recommend that you have your watch serviced approxi-
mately 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 November 2009.
Technical specifications subject to change.