As far as the watch community goes, I think it is safe to say that everybody knows Zenith. And on top of that, everybody respects their El Primero CaliberCaliber The caliber ('movement') is the heart and engine of a watch. It consists of a number of interconnected components that work together. Energy is transmitted through the gear train, to the escapement mechanism. The escapement mechanism releases this energy in a controlled manner. This drives the gear train, which ultimately rotates the hands of the watch and keeps time. [More Info]. But I would dare to say that this is not necessarily true for the average consumer. In this video, we go over what makes Zenith and its El Primero so very special:

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