If you’re anything like me, your first knowledge of Zenith watches came through a discovery of the legendary El Primero. No doubt, the world’s first high-beat automatic chronograph has been the brand’s cornerstone since 1969. But what was the manufacture from Le Locle doing in the decades before the El Primero changed the chronograph game […] Visit Zenith Calibre 135 Observatoire Limited Edition ? Unearthing The Manufacture’s Most Awarded Chronometer to read the full article.

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