iwc DA VINCI AUTOMATIC Operating Instructions Manual page 12

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
approximately every five years. Please contact an
authorized IWC Official Agent or send your watch
directly to the IWC Customer Service Department in
Schaffhausen.