DB28st

Specifications

About this reference

The noble traditions of mechanical watchmaking are subtly celebrated and reinterpreted in a contemporary masterpiece imbued with a blend of ancestral know-how and the latest technical and scientific breakthroughs. The DB28 Tourbillon Dead Beat Seconds is nurtured by a horological culture and philosophy that De Bethune share and perpetuate in a resolutely avant-garde manner. Specification: Case: Mirror-polished grade 5 titanium, platinum bezel; Case · Diameter: 45 mm; Case · Thickness: 11,20 mm; Case · Lugs: Short or long floating lugs in grade 5 titanium – De Bethune Patent (2006); Case · Crystal: Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating; Case · Case back: closed back in mirror-polished grade 5 titanium; Function: Hours, Minutes, central Deadbeat Second, 30’’ indicator via the ultra-light De Bethune tourbillon cage at 6 o’clock, Power reserve indication at 6 o’clock; Calibre · Calibre: DB2119; 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: 333; Calibre · Jewelling: 45 jewels; Calibre · Diameter: 30 mm; Calibre · Frequency: 36’000 vibrations per hour; Calibre · Adornment: Silver plate and barrel bridge cover adorned with “Côtes De Bethune”; Calibre: Hand snailed barrels; Calibre: Frame of the barrel bridge in mirror-polished steel; Calibre: Hand-polished, chamfered and flame-blued steel parts; Dial: Grained and engraving sterling silver chapter ring bearing Roman numerals and a minute circle with Arabic numerals; Dial: Power reserve indication at 6 o’clock; Dial: Ultra-light De Bethune 30’’ tourbillon in silicon and titanium at 6 o’clock, De Bethune Innovation (2008); Dial: Hands:; Dial: Hand-polished flame-blued steel; Technical features of calibre: Silicon annular balance encircled by a white gold ring, De Bethune Patent (2010); Technical features of calibre: “De Bethune” balance-spring with flat terminal curve, De Bethune Patent (2006); Technical features of calibre: Silicon escape wheel; Technical features of calibre: Ultra-light De Bethune 30’’ tourbillon in silicon and titanium, De Bethu