DB28GS Technical Details

Name: DB28 Grand Sport
Reference: DB28GSV1AN

Functions: Hours, Minutes, Performance indication between 2 and
3 o’clock
Movement: DB2115v2
Type: Mechanical hand-wound movement
Adjustment: Winding and setting the time by means of the crown (2 positions)

Technical features of calibre DB2115v2:
Number of parts: 263
Jewelling: 35 jewels
Diameter: 30 mm
Power reserve: 6 days, ensured by a self-regulating twin barrel
De Bethune Innovation (2004)

Specificities: 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

Triple pare-chute shock-absorbing system
De Bethune Innovation (2005)

Frequency: 28,800 vibrations per hour

Adornment: Mirror- polished grade 5 titanium motion-work bridge
Plate and barrel bridge covers in hand-smoothed grade 5 titanium and adorned with “Microlight engraving” De Bethune Innovation (2007)
Hand snailed barrels
Hand-polished and chamfered steel parts

Display:
Display: Hand-smoothed grade 5 titanium with hand-polished flame-blued steel hours hand
Hand-polished flame-blued steel minutes hands
Performance indication between 2 and 3 o’clock

Dial: Hand-smoothed grade 5 titanium minute ring with blue relief Arabic numerals

Case and strap:
Case material: Hand-smoothed grade 5 titanium
Case diameter: 44 mm
Case thickness: 11,2 mm
Lugs: Long floating lugs in hand-smoothed grade 5 titanium – De Bethune Patent (2006)
Crystal: In sapphire crystal (1800 Vickers hardness) with double anti-reflective coating
Case back: Screwed down closed back in hand-smoothed grade 5 titanium
Water resistance: 10 ATM
Strap: De Bethune rubber strap
Buckle: Pin buckle in hand-smoothed grade 5 titanium