De Bethune – DB25 Starry Varius Tourbillon Titanium 42 mm Limited Edition
DB25 Starry Varius
Just as Abraham-Louis Breguet had invented the tourbillon to meet the technical constraints facing marine chronometers, De Bethune invented its own version to suit the new dynamic of wristwatches. Today, a wristworn timepiece endure considerably more intense ‘torture’ than were marine chronometer’s in Breguet’s day. Changes of position are swift and random and the brutal kinetic forces to which watch mechanisms are subjected deserves close attention.
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All of which explains why the DB25 Starry Varius Tourbillon combines horological refinement with a technical feat. Its key characteristics include:
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• A mechanical in-house DB2109V4 movement equipped with De Bethune’s latest titanium balance wheel (featuring white gold inserts), entirely optimized for temperature changes and air penetration. Regulated via the De Bethune balance spring with its patented flat terminal curve maintaining a perfect centre of gravity;
• An oscillator operating at a frequency of 36,000 vibrations/hour enabling the 63-part tourbillon to achieve astonishing accuracy on the wrist corresponding to +/-1 second per day. Weighing in at just 0.18 grams, it’s one of the fastest and lightest tourbillons in the entire watch industry.
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• Jumping seconds ensuring high-precision reading and consisting of two coaxially mounted seconds (fourth) wheels and a double pallet lever with four ruby pallets
• An original 42mm case in polished titanium, with perfectly integrated lugs ensuring ideal comfort on the wrist;
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• A blued titanium and gold stamped dial personalised according to a given date or geographical location. Crafting using the traditional gold leaf guilding method enhanced by laser beam micro milling, a Milky Way pattern joins the De Bethune constellation.
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TECHNICAL SPECIFICATIONS
Name: Starry Varius Tourbillon
Collection DB25 / Limited Edition to 20 exemplaires
Reference DB25VTTIS3
Case
Titanium Grade 5
Case material: Polished grade 5 titanium
Case diameter: 42 mm
Case thickness: 10.30 mm
Lugs: Short or long floating lugs in polished grade 5 titanium
De Bethune Patent (2006)
Crystal: In sapphire crystal (hardness of 1800 Vickers) with double anti-reflective coating
Case back: Screwed case back in grade 5 polished titanium that opens on a linear power reserve indicator in blued steel
Sapphire crystal (1800 Vickers hardness) with double anti-reflective coating
Sapphire crystal (hardness of 1800 Vickers) with double anti-reflective coating
Water resistance: 3 ATM
Movement
Manual-winding mechanical
Calibre DB2109V4
Frequency: 36,000 vibrations per hour
Number of parts: 165
Tourbillon: 63-part
Jewelling: 35 jewels
Diameter: 30 mm
Power reserve: 96 h, ensured by a self-regulating twin barrel
De Bethune Innovation (2004)
Specificities:
Titanium balance wheel with white gold inserts, optimized for temperature differences and air penetration De Bethune Patent (2016)
"De Bethune" balance-spring with flat terminal curve De Bethune Patent (2006)
Silicon escape wheel
Triple pare-chute shock-absorbing system De Bethune Patent (2005)
Functions
Hours, Minutes, Seconds,
Jumping seconds, Tourbillon
Strap
Extra-supple alligator skin, lining in alligator
Buckle: Pin buckle in mirror-polished grade 5 titanium
Limited Edition to only 20 pieces
Price incl. VAT 197'000 CHF
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Press release -- Geneva 2018
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De Bethune Geneva Office
25 Grand-Rue 1204 Geneva
Switzerland
Tel: +41 22 310 22 71
Fax: +41 22 310 33 40
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