By and large they work fine, although I have had most of them serviced once after they gradually coasted to a stop after 10-15 years of running without issues.

Bulova and Omega similar but not the same.

Pendant watch
I've got the book
and the servicing microscope... which I don't know how to use (and without parts, what's the point?)
Cazalea
PS Accuquartz NOT the same movement