We already brought you news of the Phases de Lune and the Professional Aria ranges within the Diagono Collection. Let us turn out attention to the Diagono Calibro 303, so named for its BVL 303 movement.

A chronograph with integrated column wheel mechanism, the movement’s name follows Bulgari’s naming convention, revealing the number of parts used. You will clearly see the efforts they have gone to with the multi-level dial: the Satinee Soleil decorated base metal plate, an anthracite level with vertical lines and the chronograph subdials and small seconds counter (traditional tri-compax layout) with circular trim.

Internally, the BVL 303 stands up the closest of scrutiny. Aside from being an integrated chronograph movement (it is purpose-built to be a chronograph), it also sports a vertically coupled clutch system that resolves the thorny issue of the so-called chronograph backlash during operation of the start, stop and return to zero functions.

The development of this self-winding mechanism took more than 3,520 hours and it is a fusion of 10 different materials. Bulgari notes that the base plate alone features more than 250 manual finishing and polishing operations.