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Who finally was ‘the first’ is hotly debated until today, and depends on how one defines ‘fulfilment’: Zenith was the first to announce (in January 1969) but the last to deliver, the Cal. 11 a modular cam/lever operated one with micro-rotor, and the Seiko finally integrated and with column wheel as well, but also with a vertical clutch and Seiko’s efficient ‘Magic Lever’ winding. 6139)Īll of them were decidedly different in approach, the Zenith a classically integrated column wheel movement with a high beat escapement, the Cal. (from left: Zenith El Primero, Heuer/Breitling/Buren/Dubois-Depraz Cal. 11, developed by a joint venture of Heuer, Breitling, Buren and Dubois-Depraz, and Seiko’s Cal.
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3019PHC (its name back then) was one of the three movements that raced for the crown of the ‘first automatic chronograph movement’ ever, a race it fought together with the Chronomatic, better known as Cal. Side note: In the late 1960 years, the El Primero Cal. While we normally would cover the watch first and the movement second, we take the freedom to reverse sequence owing to the prominent position the El Primero movement enjoys in the history of the chronograph. 3600, with some significant improvements, and celebrates this with an equally carefully revised Chronomaster Sport collection: That was until today, and now the brand presents a carefully upgraded version, called Cal. The movement was so iconic and proved future-proof that Zenith largely refrained from chaining ‘the winning team’. Without it, however, the entire watch industry would look different even. The El Primero movement is something like the ‘raison d’être’ for the Zenith: without it, the manufacture would very likely not exist anymore. 3600) in 5 decades: 1/10 of a second, more autonomy, conventional crown positions, and revised chrono mechanics, clothed in a new old dress – ´Chronomaster Sport`
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#ZENITH CHRONOMASTER SPORT EL PRIMERO 3600 41MM UPGRADE#
The venerable El Primero gets a first substantial upgrade (Cal. Zenith ´Chronomaster Sport` – a new dress and the El Primero Cal.