Omega “Constellation-Electroquartz”

European Watch, Clock and Jewellery Fair 1973 BF 305
Omega have given their low-frequency (8,192 Hertz) quartz watch
luxurious styling in the purest “Full Flow” look. The satin-
finished 18 carat yellow gold bracelet opens on a large dial with precise and easy-to-read divisions. The crystal, fittingly enough, is quartz. (OMEGA “Constellation-Electroquartz”)