Video: Zenith’s Fusee-and-Chain Construction Explained

Zenith developed a special complicated watch, the Academy Georges Favre-Jacot, to celebrate its 150th Anniversary in 2014. (Click here to read our detailed report on the watch.)

Zenith traces the roots of this watch, which is equipped with a fusee-and-chain constant force system, to its development of marine clocks. In this exclusive video, the head movement designer of Zenith explains in detail how a fusee-and-chain functions and provides the answers to two important questions: How do you protect the chain when you’re winding the watch? And how do you keep the watch running while it’s being wound?

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