De Bethune DB28 Tourbillon Deadbeat Seconds DB28STTS5PN

    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.

    Functions : Hours, minutes, central deadbeat second, 30’’ indicator via the ultra-light de bethune tourbillon cage and power reserve at 6 o’clock
    Dial : Grained and engraving sterling silver chapter ring bearing roman numerals and a minute circle with arabic numerals – ultra-light de bethune 30’’ tourbillon in silicon and titanium at 6 o’clock – power reserve indication at 6 o’clock
    Hands : Hand-polished flame-blued steel
    Case : Mirror-polished grade 5 titanium, platinum bezel – diameter 45 mm – thickness 11,2 mm
    Attachments : Short or long floating lugs in mirror-polished grade 5 titanium, de bethune patent (2006)
    Glass : Sapphire crystal, 1800 vickers hardness with double anti-reflective treatment crown at 3 o’clock, setting in two positions
    Back : Closed back in mirror-polished grade 5 titanium
    Movement : Mechanical hand-wound diameter 30 mm – 333 parts – silver plate and barrel bridge cover adorned with “côtes de bethune” – hand snailed barrels – frame of the barrel bridge in mirror-polished steel – hand-polished, chamfered and flame-blued steel parts - self-regulating twin barrel, de bethune innovation (2004) - silicon annular balance encircled by a white gold ring, de bethune patent (2010) - "de bethune" balance-spring with flat terminal curve, de bethune patent (2006) - silicon escape wheel - ultra-light de bethune 30’’ tourbillon in silicon and titanium, de bethune innovation (2008) - de bethune deadbeat second, de bethune innovation (2011)
    Jewelling : 45 Jewels
    Frequency : 36,000 vibrations per hour
    Power Reserve : 5 days
    Strap : Extra-supple alligator leather, alligator lining