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Split Seconds Chronograph
![Vacheron Constantin Les Cabinotiers ref 9740C 000R B692 unique piece watches and wonders novelty](https://swisswatches-magazine.com/wp-content/uploads/2020/04/Vacheron-Constantin-Les-Cabinotiers-ref-9740C-000R-B692-unique-piece-watches-and-wonders-novelty-news-cover-740x600.jpg)
Vacheron Constantin introduces one of the most complicated wristwatches ever produced by the Maison. This one-of-a-kind double-sided timepiece displays the chronograph hours and measurements on the front, along with a perpetual calendar. The back is dedicated to astronomical functions, including indications…