Reference 3918/13 belongs to the Golden Ellipse line, a collection defined by proportions derived from the golden ratio rather than conventional geometry. The case shape achieves visual balance through mathematical precision, departing entirely from round Calatrava architecture. Typically executed in precious metal, the watch emphasizes thin construction, refined finishing, and a minimalist dial layout that removes unnecessary visual weight. The movement architecture is designed for slimness and mechanical stability, reinforcing the Ellipse as a study in proportion, restraint, and formal elegance rather than complication.