Db25 Starry Varius Chronomètre Tourbillon

Specifications

About this reference

De Bethune reinterprets the tourbillon as a true wrist-worn regulator—an innovation that marks a pivotal moment in the evolution of mechanical timekeeping. This masterpiece remains discreetly hidden on the caseback, revealed only to true connoisseurs who appreciate its refined complexity. Beyond its technical brilliance, the watch captures a deeper sense of artistry—the mesmerizing beauty of a starry sky and a tribute to the great 18th-century clocks, reflected in the sterling silver hour and minute ring, destined to develop a rich, timeless patina over the years. Specification: Case: Polished grade 5 titanium; Case · Diameter: 42 mm; Case · Thickness: 10,3 mm; Case: Lugs :; Case: Ogival lugs; Case: Crystal :; Case: Saphir crystal (1800 Vickers hardness), with double anti-reflective coating; Case: Case back :; Case: Open back, De Bethune 30 " silicon/titanium Tourbillon, 36,000 vph – central jumping seconds; Case: Saphir crystal (1800 Vickers hardness), with double anti-reflective coating; Function: Hours, Minutes, jumping seconds, 30’’ indicator via the ultra-light De Bethune tourbillon cage on case back; Calibre · Calibre: DB2109V4; Calibre · Type: Mechanical manual-winding calibre; Calibre · Power reserve: 4 days, ensured by a self-regulating twin barrel, De Bethune Innovation (2004); Calibre · Number of parts: 260; Calibre · Jewelling: 43 jewels; Calibre · Diameter: 30 mm; Calibre · Frequency: 36'000 vibrations per hour; Calibre · Adornment: Silver plate and barrel bridge cover polished; Calibre: Hand-snailed barrels; Calibre: Hand-polished, chamfered steel parts; Calibre: Technical features of calibre; Calibre: Titanium balance wheel with white gold inserts, optimised for temperature differences and air penetration , De Bethune Patent (2016); Calibre: "De Bethune" balance-spring with flat terminal curve, De Bethune Patent (2006); Calibre: Silicon escape wheel; Calibre: Ultra-light De Bethune 30’’ tourbillon in titanium, De Bethune Innovation (2008); Calibre: De Bethune Dead Beat Second, De Bethune Innovation (2011).