The SXH1 caliber is a proprietary movement designed by Czapek. It is the first in a family of movements developed specifically for Czapek watches, according to the strictest rules of the watchmaking art. It was conceived in cooperation with Jean-François Mojon, a designer watchmaker who heads the Le Locle based company Chronode. This haute horlogerie mechanical calibre boasts 31 jewels. It is finely decorated and remains aesthetically and functionally true to the 1850 original. The architecture remains symmetrical, and the sandblasted finish is a modern interpretation of the ‘satiné frost’ technique used in the 19th Century – a process of gold plating using mercury evaporation. This manually-wound movement has two barrel springs and runs at a rate of 21,600 vibrations per hour, which translates to 3 Hertz. It features a power reserve of seven days. The manual beveling finish and the sandblasted bridges create a beautiful and modern look, inspired from the past. The most striking elements remain the open ratchets, with teeth polished in ‘bevel’ and unique to Czapek SXH1. They become its mechanical signature.