DB28 Tourbillon

Hours, Minutes, 30’’ indicator via the ultra-light De Bethune tourbillon cage at 6 o’clock, Power reserve situated on the back

Dial:

De Bethune star-studded sky in blued and polished titanium with hand-fitted white gold and diamonds pins depicting the stars, 281 Diamond-set (0.56 cts) titanium hours ring, Polished rose gold hours indicators

Hands:

Polished rose gold

Mirror polished rose gold set with 55 baguette-cut (3.09 cts) – diameter 42.6 mm – thickness 9.20 mm 

Attachments:
Grade 5 titanium floating set with 184 baguette-cut and 112 round-cut diamonds (1.89 cts)- De Bethune Patent (2006)

Crown: In grade 5 titanium set with a rose-cut diamond (0.26 cts)

Glass:
Sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment
Crown at 12 o’clock, setting in two positions

Back:
Screwed down case back in mirror- polished grade 5 titanium opens with a linear power reserve
Sapphire crystal (hardness of 1800 Vickers) with double anti-reflective coating

DB2019 calibre

Movement:
Mechanical hand-wound 

Diameter 30 mm – 282 parts – Black polished steel motion-work bridge and barrel bridge –  Ruthenium plate cover adorned with “Côte De Bethune”– 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 silicon and titanium, De Bethune Innovation (2008)

Jewelling:
38 jewels

Frequency:
36,000 vibrations per hour

Power reserve:
5 days

Strap:

Extra-supple alligator leather, alligator lining

Buckle:

Grade 5 titanium set with 146 round-cut diamonds (0.4 cts) , pin in polished rose gold