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DB28

XP Tourbillon

Reference: DB28XPTTIS1

In highlighting this design, which has become iconic over the years, De Bethune celebrates the DB28's 10th anniversary by introducing a set of three watches in 2020. All three timepieces, all true to the DNA of the DB28, are interpretations of the same theme, independent of each other yet linked by their history, the work that went into them, the brand cues they reflect. Each one a creation in its own right, yet all share a kinship, like siblings.

functions

Hours, Minutes, 30’’ indicator via the ultra-light De Bethune tourbillon cage at 6 o’clock 

display

Dial: blued-polished titanium hours ring with polished hour markers. Circular satin-brushed titanium minutes ring  Silver-toned hand-guilloché barley-corn motif  Dial featuring an opening revealing the tourbillon, surrounded by a chamfered blued-polished titanium rim and a titanium seconds dial 

Hands:  Blued polished titanium hands with polished inserts 

case

Polished grade 5 titanium with “microlight” case middle  – diameter 43 mm – thickness 8,1 mm 

Attachments:
Polished grade 5 titanium floating lugs , De Bethune Patent (2006)

Glass:
Sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment
Crown at 3 o’clock, setting in two positions

Back:
antireflective coating  Caseback:  Solid, in polished grade 5 titanium with the position of the planets on November 19th 2011(Aiguille d’Or - GPHG)  Engraved ring in blued circular satin-finish titanium

calibre

DB2009V4 calibre

Movement:
Mechanical hand-wound 

Diameter 30 mm – 216 parts – Hand-crafted finishing and decoration

- 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) 

Jewelling:
33 jewels

Frequency:
36,000 vibrations per hour

Power reserve:
5 days

strap

Extra-supple alligator leather, alligator lining

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