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Zenith: Zenith is a watchmaking company founded by young twenty two year old Georges Favre-Jacot in 1865. It is one of the oldest watch producer company and also on of the companies that produce their own mechanical movement.

With El Primero, the watch that featured the world's first automatic chronograph movement, Zenith made history. It won many prix medals for timekeeping precision at the international expositions in Geneva, Barcelona, Neuchatel and Paris.

Apart from its quality and design, Zenith is characterized for manufacturing its own movements and having its own calibre. Those movements are known for being high standard quality. As a consequence, brands like Rolex adopted Zenith’s movement to manufacture the Rolex Cosmograph Daytona. In 1988, Rolex launched its first automatic chronograph in which the most important feature was its calibre 4030 based on the Zenith calibre 400, the best industrial chronographic movement on the market at the time.

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