DB16 Technical Details

Name: DB16 Tourbillon Regulator White Gold
Reference: DB16WS1
Limitation: Limited edition of 5 pieces

Functions: Hours, minutes, central jumping seconds, perpetual calendar Spherical moon-phase indication and leap-year indication at 12 o’clock, Central Dead Beat Second, 30’’ indicator via the ultra-light De Bethune tourbillon cage and Power reserve on case back, age of the moon indication on the case back
Movement: DB2509
Type: Mechanical calibre with manual winding
Adjustment: Winding, setting the date and the time by means of the crown (3 positions)
Month, day of the week and spherical moon-phase adjustment via correctors

Technical features of calibre DB2509:
Number of parts: 499
Jewelling: 48 jewels
Diameter: 30 mm
Power reserve: 4 days, ensured by a self-regulating twin barrel
A De Bethune Innovation (2004)

Specificities: 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 Dead Beat Second
De Bethune Innovation (2011)

Spherical moon-phase indication accurate to a degree of one lunar day every 122 years – De Bethune Patent (2004)

Retrograde age of the moon indication
De Bethune Innovation (2013)

Frequency: 36’000 vibrations per hour
Adornment: Bridge cover « Côtes De Bethune » rhodium
Dial of the day of the moon and seconds dial, silver transferred
Hand-polished, chamfered steel parts

Display:
Display: Hands curved, in hand-polished and flame-blued steel
Perpetual calendar apertures indicating the day of the week at 9 o’clock and the month at 3 o’clock – sub dial at 6 o’clock indicating the day of the month – leap year indicated by a gold pastille appearing in the starry sky at 12 o’clock
Spherical moon-phase indication in palladium and flamed-blued steel with an accuracy of one lunar day every 122 years at 12 o’clock – De Bethune Patent (2004)

Dial and flanges: Silver hand-guilloché, with 12 radiating sectors centred on the dial of the starry sky
De Bethune star-studded sky in blued mirror-polished steel, inlaid with rose gold stars
Silver curved hour, date and moon-phase rings with blue relief Roman numerals

Case and strap:
Case material: White gold
Case diameter: 43 mm
Case thickness: 13.40 mm
Lugs: cone-shaped lugs
Crystal: In sapphire crystal (hardness of 1800 Vickers) with double anti-reflective coating
Case back: Open on the 30’’ indicator via the ultra-light De Bethune tourbillon cage, mechanism of the central jumping seconds, retrograde age of the moon indication on a sector dial, power reserve indication
Sapphire crystal (hardness of 1800 Vickers) with double anti-reflective coating Water resistance: 3 ATM
Strap: Extra-supple alligator skin, lining in alligator
Buckle: Ardillon, in white gold