Zenith “El Primero”

Swiss Watch Fair 1969 BF 18
A revolutionary now watch concept : the automatic chronographs Presented by the ZonithIVIovado group, this fantastic development is equippd with a high frequency automatic movement (36.000 vibrations per hour) - with contrai rotor - and includes an instant-change calendar with date control by the crown. The technical teat is all the more impressive since the movement fits in a case smaller than of a traditional chronograph, s. 30-minute arid i 2-hour timors. ixtra-thin 18 et gold or allsteel water-resistant case. (ZENITH “El Primero”).