Zenith Chronomaster El Primero Open

When you first look at the Zenith Chronomaster El Primero Open Chronograph, you'll notice the dial opening in the upper left part of the watch, which reveals a fascinating glimpse of the legendary El Primero 4061 caliber. This is powered by a self-winding mechanism and provides a power reserve of at least 50 hours. In total, the chronograph consists of an incredible 282 components, which are the basis of a variety of exciting functions. Thus, there is a 12-hour counter at the 6 o'clock position and a 30-minute counter at 3 o'clock. In addition, the small seconds is displayed at 9 o'clock. The case of the Zenith Chronomaster El Primero Open is made of stainless steel and has a diameter of 42 mm, as well as water resistance to 10 ATM. The dial is made in silver color with a sunburst finish. The watch is worn with a noble black strap made of alligator leather, lined with rubber. The watch is closed on the arm with a stainless steel triple clasp.

Celestial mechanics as a model for clockworks

Georges Favre-Jacot, the founder of the famous watch manufactory, was just 22 years old when he founded the "Fabrique des Billodes" in 1865 in Le Locle, Switzerland. Initially, the manufactory produced mainly precision pocket watches. Later, production expanded to include marine chronometers and table clocks. The company name came about because the starry sky reminded the company founder of a clockwork. This is also how the company symbol was created, on which a five-pointed star can be seen. The first wristwatches were produced after the First World War. Later, in 1999, Zenith together with TAG Heuer became part of the luxury goods group LVMH.