De Bethune DB28 Grand Bleu Ref: DB28GSV2AN

A new calibre; water resistance to more than 100 metres; excellent readability including in the darkest depths thanks to ingenious lighting inside the movement and a new photoluminescent blue, a different bezel that rotates this time with the crystal to indicate dive times; a titanium case for a light feel and a rubber strap for convenience; along with a five-day power reserve.

Ref. DB28GSV2AN

Technical Specifications

Functions
Hours, minutes, seconds, power reserve indication between 9 and 10 o'clock, unidirectional rotating bezel, manual dial
Dial
Satin-brushed grade 5 titanium minutes dial with cut-out arabic numeerals, rotating bezel,= crystal with metallised minutes ring, power-reserve indicator between 9 and 10 o'clock
Hands
- Blue titanium hours and minutes hands with polished steel insert and second blued steel insert
- Luminescent tip
- Polished steel seconds hand with luminscent tip.
Case
- Black zirconium case middle with "microlight" decoration, brushed and polished grade 5 titanium caseback and bezel
- Floating lugs in brushed grade 5 titanium, De Bethune patent (2006)
Dimensions
- 44 mm diameter
- 12.8mm thickness
Glass
- Sapphire crystal, 1800 vickers hardness with double anti-reflective treatment
- Crown at 12'o'clock, setting in two positions
Back
Open in brushed grade 5 titanium
Water resistance
10 ATM
Calibre
DB2080 Calibre
Movement
- Mechanical Hand-wound
- Diameter 30mm
- 400 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)
- Dial lighting produced by an entirely mechanical means working on the dynamo principle powered by a twin barrel and manually controlled via a pusher, De Bethune innovation (2019)
Number of jewels
35 jewels
Frequency
28,8000 vibrations per hour
Power reserve
5 Days
Strap
- Natural rubber strap + 1 canvas / leather strap
- Buckle: Folding clasp in brushed grade 5 titanium

Oster Jewelers is a De Bethune Authorized Retail Partner.