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Chronometer watches for Dummies

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More Proving its mastery of chronographs and especially high-frequency precision, ZENITH unveils the DEFY El Primero 21 by using a new El Primero calibre beating at a phenomenal rate of 50Hz for an correct one/a centesimal of a second chronograph purpose. Complication: Refers to any observe motion over and above https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/

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