De Bethune
Introducing the De Bethune DB25 Starry Varius Aérolite
De Bethune
Introducing the De Bethune DB25 Starry Varius Aérolite
The Low-Down
The DB25 Starry Varius, in its original form, is one of the most sublime watches ever created by De Bethune. Delectably discreet, it hides all of its horological fireworks – a high-frequency and high-speed tourbillon with a deadbeat seconds – beneath a blued, polished titanium dial that recreates a glorious night sky scattered with stars. The newly launched DB25 Starry Varius Aérolite dials up its celestial magic with a slice of Muonionalusta meteorite, the world’s oldest known meteorite that struck Earth more than one million years BCE.
Elevated above all else in the movement is the skeletonised, blue titanium bridge that retains a secondary escapement for the deadbeat seconds. It comprises of a pair of solid-gold escape wheels mounted in a co-axial configuration, along with a coiled spring and jewelled pallet. The pallet swings back and forth, releasing the wheels one tooth at a time, advancing the seconds hand in jumps.
Right below the mirror-polished delta-shaped bridge is the high speed and high frequency tourbillon. It contains a balance wheel that oscillates at a frequency of 5Hz, or 36,000 vibrations per hour, which is extraordinarily high for a tourbillon while the cage makes one revolution every 30 seconds, twice the speed of a conventional tourbillon.
The hairspring, on the other hand, is made of Nivarox, the conventional nickel-iron alloy used for almost all balance springs in watchmaking. However, it is characterized by a very particular terminal curve. In contrast to the traditional Breguet overcoil, De Bethune’s hairspring is flat, but has a wider terminal curve, which reduces its height while enhancing concentricity.
IMHO
As mentioned at the outset, the De Bethune DB25 Starry Varius is already an extremely compelling watch. But incorporating a rock formed over billions of years ago that traveled across vast distances of interplanetary space to find its home on your wrist adds a lovely bit of poetry to a highly technical watch. In effect, the passage of time is juxtaposed by an eternal backdrop that gives new meaning to De Bethune’s out-of-this-world aesthetics and mechanics.
Tech Specs
DB25 Starry Varius Aérolite, Reference: DB25VTM
Case: 42mm by 10.3mm; Polished Grade 5 Titanium
Dial: Star-studded sky in blued and polished meteorite with hand-fitted white gold pins depicting the stars; Milky Way patterns gilded with 24-carat gold leaf; silver-toned hours and minutes ring
Movement: Hand-wound DB2109V4, power reserve of 4 days
Functions: Hour, minutes, dead seconds, tourbillon
Strap: Extra-supple alligator leather with grade 5 titanium pin buckle
Availability: Limited to a production of five pieces per year