How does Omega modify the ETA base movement for use in this watch?
In addition to polishing the components and adding the Geneve Wave decor, Omega replaces the rotor with an Omega Specific (only) rotor that rides on a small ball bearing. They change the automatic bridge with a their own gear-train and endshake corrector. Which in turn, reduces the height difference between the auxiliary reverser and rotor. This also allows the oscillating weight’s gear to mesh more precisely with the click wheel. This modification reduces the rotor’s play during movement, and also prevents friction against the plate. On a standard ETA ebauche, a metal seating is used to hold the barrel in place. Omega replaces that, and uses two jewels to hold the barrel in place. This improves the constancy of the force flow and ultimately produces a more accurate movement, and adds about 2 hours to the power reserve. And to top all that off, add pure gold inlaid engraving for the writing.
