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Joaillerie Michel - Finer than a human hair, the blue Parachrom hairspring is a key component of Calibre 3131, powering the Milgauss and contributing to its magnetic resistance. Manufacturing begins with the
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Baselworld 2014: Explaining the Syloxi Hairspring Inside the Datejust Pearlmaster 34, the First Rolex Equipped with a Silicon Balance Spring | SJX Watches
Rolex Watch Part 1556,1570,1560,1565,1575 Balance With Breguet Hairspring Timed ref 8106