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DB28

Steel Wheels

Reference: DB28SWTIS1PN

The new DB28 Steel Wheels is all about transparency and light, thanks to a dial providing stunning views of the mesmerising movement architecture. In keeping with the design codes of its predecessors, it perpetuates the heritage of the House: an ideal blend of daring aesthetics and exceptional mechanics.

functions

Hours, Minutes, Spherical moon phase indication at 6 o’clock, Power reserve situated on the back

display

Dial:
Circular-grained titanium hours ring – Moon phase bezel in polished blued titanium – Spherical polished titanium hour-markers set on a blued polished titanium circles – spherical moon-phase indication in palladium and flame-blued steel at 6 o'clock 

Hands:
Sapphire hours hand rimmed with flame-blued steel, minutes hand in hand-polished flame-blued steel

case

Polished grade 5 titanium – diameter 42.6 mm – thickness 9,3 mm 

Attachments:
Short or long floating lugs in mirror-polished grade 5 titanium, 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:
Open in polished grade 5 titanium that opens on a linear power reserve in rose gold 5N
Sapphire crystal (hardness of 1800 Vickers) with double anti-reflective coating

calibre

DB2115V4 calibre

Movement:
Mechanical hand-wound

Diameter 30 mm – 297 parts – Concave polished grade 5 titanium plate cover –  Hand made mirror-polished grade 5 titanium motion works bridge – Barrels bridge adorned with “Côtes De Bethune” and “microlight” engraving – 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
- Spherical moon phase indication accurate to a degree of one lunar day every 122 years, De Bethune Patent (2004)
- Triple pare-chute shock-absorbing system, De Bethune Innovation (2005)

Jewelling:
35 jewels

Frequency:
28,800 vibrations per hour

Power reserve:
6 days

strap

Extra-supple alligator leather, alligator lining

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