Omega · Automatic

1154

Omega's execution of the ETA/Valjoux 7750, fitted to the Seamaster Polaris. The chronograph is integrated and cam-switched rather than modular, and the rotor winds in one direction only, as the 7750's design dictates. It is chronometer-certified. The later 1164 is the same movement with the ETA markings under the balance removed, and small changes besides.