DB28 Grand Sport
The DB28GS expresses a bold character revealed through both its aesthetic and technical attributes. It fully complies with the strict rule of wearer comfort that De Bethune applies to its models, and particularly those in the DB28 collection. The DB28GS proudly displays impeccable water resistance to depths corresponding to three full leagues under the sea. Its DB2115 calibre is equipped with a self-regulating twin barrel ensuring a 6-day power reserve – a performance that can be tracked by means of a blue indicator at 3 o’clock.
Hand-smoothed grade 5 titanium minute ring with blue relief Arabic numerals– Performance indication between 2 and 3 o’clock
Hands:
Hand-smoothed grade 5 titanium with hand-polished flame-blued steel hours hand and hand-polished flame-blued steel minutes hands
Attachments:
Short or long floating lugs in hand-smoothed grade 5 titanium, De Bethune Patent (2006)
Glass:
Sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment
Crown at 12 o’clock, setting in two positions
Back:
closed back in hand-smoothed grade 5 titanium
Movement:
Mechanical hand-wound
Diameter 30 mm – 263 parts – 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, flame-blued and 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
- Triple pare-chute shock-absorbing system, De Bethune Innovation (2005)
Jewelling:
35 jewels
Frequency:
28,800 vibrations per hour
Power reserve:
6 days
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