Swiss Watch Fair 1967 BF 71
An electronic quartz chronometer of particularly compact size (76 x 80 x 128 mm). Variation 0.01 second per day at constant temperature. Can be used as master clock for time distribution centres. Withstands vibrations and normal shocks, magnetic fields as well as dust and humidity. Five-day built-in power reserved. A chronometer of this type set the absolute record in the Marine Chronometer category at the 1966- Neuchâtel Observatory contests (EBAUCHES S.A. - Oscilloquartz)