Omega “Megasonic f 720 Hz”

European Watch Clock and Jewellery Fair 1974 BF 306
With totally integrated steel bracelet and case, this model is fitted with Omegas new Megasonic movement. Designed by Max Hetzel, the man who invented the tuning-fork electronic watch, this movement is built around a sonic resonator vibrating at a frequency of 720 Hz, sustained by an
electronic circuit. Thesevibrations are then transmitted to e geartrain
by a micromotor with magnetic coupling and gearing. (OMEGA “Megasonic f 720 Hz”)