With the introduction of this new model, Vacheron Constantin has broken two records. Model Patrimony Contemporaine Ultra-Thin Calibre 1731 is the thinnest minute repeater watch, as well as the thinnest minute repeater mechanism in the world. The total height of the watch is 8.09mm, and the height of the mechanism is only 3.90mm. Diameter casing made of 18K rose gold is 41mm. Functionality of the model is, the view hours, minutes, small secondary and minute repeater.
The new ultra-thin watch mechanism – Calibre 1731 is a highly decorated and has a Geneva seal. The new mechanism is named Calibre 1731 in honor of the year when was born company founder Jean-Marc Vacheron. The mechanism has a power reserve of 65 hours. This caliber has 21,600 beats per hour and has a total of 36 built-in ruby.