De Bethune DB25 Starry Varius Chronometre Tourbillon

    De Bethune revisits the tourbillon as an authentic wristworn regulator, an historical breakthrough in the evolution of mechanical watches. This masterpiece is revealed only on the back of the watch, to genuine connoisseurs capable of comprehending its passionately subtle features, and also of appreciating the inner power and beauty of the starry sky, along with the evocation of the most famous 18th century clocks through the hour and minute ring in a sterling silver that is destined to acquire a sublime patina over the years.

    Functions : hours, minutes, central jumping seconds, 30’’ indicator via the ultra-light de bethune tourbillon cage on case back
    Dial : de bethune star-studded sky in blued and polished titanium with hand-fitted white gold pins depicting the stars – milky way patterns produced by laser beam micro milling, gilded with 24-carat gold leaf – silver-toned hours and minutes ring
    Hands : in hand-polished steel
    Case : polished grade 5 titanium – diameter 42 mm – thickness 10,3 mm
    Attachments : integrated, hollowed lugs
    Glass : sapphire crystal, 1800 vickers hardness with double anti-reflective treatment crown at 3 o’clock, setting in two positions
    Back : open back, de bethune 30 " silicon/titanium tourbillon, 36,000 vph – central jumping seconds sapphire crystal (1800 vickers hardness) with double anti-reflective coating
    Movement : mechanical hand-wound diameter 30 mm – 260 parts – silver plate and barrel bridge cover polished – hand-snailed barrels – hand-polished, chamfered steel parts - self-regulating twin barrel, de bethune innovation (2004) - titanium balance wheel with white gold inserts, de bethune patent (2016) - "de bethune" balance-spring with flat terminal curve, de bethune patent (2006) - silicon escape wheel - ultra-light de bethune 30’’ tourbillon in titanium, de bethune innovation (2008) - de bethune dead beat second, de bethune innovation (2011)
    Jewelling : 43 jewels
    Frequency : 36,000 vibrations per hour
    Power Reserve : 4 days
    Strap : Extra-supple alligator leather, alligator lining