iwc 3769 Mode D'emploi page 30

Changing between different types of bracelet
Your IWC watch has a bracelet quick-change system*
that enables you to change the bracelet quickly and
simply, without the use of tools.
1
2
* The Aquatimer bracelet quick-change system has been developed
by IWC under a patent license from Cartier.
To remove the bracelet, use your
thumb to push down the retaining
lever (1) on the underside of the
horns.
While holding the lever down, slide
the connecting link out vertically
from the underside of the case (2).