DB28XS

Kind of Blue Tourbillon

Ref: DB28XSTB

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De Bethune celebrates blue, its favourite colour. The independent Manufacture that constantly reinvents itself and redefines its icons now pushes the boundaries of creativity and technical expertise even further with a tourbillon version of the 39 mm DB28 Kind of Blue.

Functions

Hours, Minutes, 30” indicator Ultra-light De Bethune Tourbillon Cage at 6 o’clock

Case


Material

Blued polished grade 5

Diameter

38.7 mm

Thickness

8 mm

LugS

Blued polished grade 5 titanium floating lugs – De Bethune Patent (2006)

Crystal

Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating

Case Back

Screwed case back in blued polished titanium with double anti-reflective coating

Calibre DB2009V7


TYPE

Mechanical hand-wound movement

POWER RESERVE

5 days, ensured by a self-regulating twin barrel, De Bethune Innovation (2004)

Technical features

  • Titanium balance wheel with white gold inserts, optimised 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
  • Ultra-light De Bethune 30’’ tourbillon in silicon and titanium De Bethune Innovation (2008)

Display


DIAL

  • Titanium hour ring with blued microlight decoration and polished hour markers
  • Blued grade 5 circular satin titanium minutes and seconds ring
  • Bridge cover on the barrel and triangular central bridge in grade 5 blued polished titanium with blued drawn chamfered contour

HANDS

Polished titanium hands

Specifications

Watch

Case

Material

Blued polished grade 5

Diameter

38.7 mm

Thickness

8 mm

Lugs

Blued polished grade 5 titanium floating lugs – De Bethune Patent (2006)

Crystal

Sapphire crystal (1800 Vickers hardness), with double anti-reflective coating

Case back 

Screwed case back in blued polished titanium with double anti-reflective coating

Display

Dial

Titanium hour ring with blued microlight decoration and polished hour markers

Blued grade 5 circular satin titanium minutes and seconds ring

Bridge cover on the barrel and triangular central bridge in grade 5 blued polished titanium with blued drawn chamfered contour

Hands

Polished titanium hands

Calibre

TYPE

Mechanical hand-wound movement

POWER RESERVE

5 days, ensured by a self-regulating twin barrel, De Bethune Innovation (2004)

Number of parts

238

Jewelling

36 jewels

Diameter

30 mm

Frequency

36’000 vibrations per hour

Adornment

  • Hand-crafted finishing and decoration

Technical features

  • Titanium balance wheel with white gold inserts, optimised 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
  • Ultra-light De Bethune 30’’ tourbillon in silicon and titanium De Bethune Innovation (2008)
Resources

Technical Description

Similar models

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