De Bethune – CURRENT DB28GS ‘Swordfish’ Black Zirconium Edition - 2025 Click, to see the large size. ▶ BIG FOTO 
Reliability, technical excellence, and refinement
A
diving watch that guarantees, as always with De Bethune, optimal
legibility of the time and immersion duration. It is designed to perform
under challenging conditions, with reduced visibility, both day and
night.
2019
marked a turning point for De Bethune when Denis Flageollet, founder and
master watchmaker, introduced a 100% sport model.
Click, to see the large size. ▶ BIG FOTO The DB28GS Grand Bleu
represents the beginning of an exciting new chapter in his horological
journey. Both technical and elegant, it is the first diving watch from
the independent manufacturer, which, true to its approach, reinterprets
and refines the aesthetics and technical features of its models over
time.
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Today,
the
DB28GS Swordfish adopts the elegant design and bold character of its
predecessors, while offering a new bi-chromatic interpretation—both
mysterious and dazzling—that explores the nuances of black surrounding
the iconic
De Bethune blue.
Exceptional Aesthetic Legibility
The craftsmanship at the Auberson workshops is evident in the quality
of the finishes and the materials, including the oxidation of zirconium
and Grade 5 titanium, as well as the DLC treatment on the hardened
stainless steel. The combination of these materials for the 44mm case,
the mobile cradles, and the bridges—brushed, hand-polished, or decorated
with the "microlight" technique—offers a depth of black with multiple
tonalities, ranging from matte to glossy, subtly highlighted with
touches of blue.
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The Grade
5 titanium components — polished, mirror-finished, and blued—such as the
hands, inserts, crown, bridges, and the micro-spherical indices of the
bezel, have been meticulously designed, selected, and assembled to
ensure immediate legibility of the time.
Diving Time Measurement
The immersion time is elegantly read on the De Bethune watch, thanks
to a bezel that rotates the watch's sapphire crystal in its
unidirectional movement.
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Unlike traditional dive watches, the
DB28 GS
Swordfish displays the minute track on the sapphire glass itself,
refining the design and enhancing legibility while maintaining a precise
display system.
Technical Legibility Optimized by an Ingenious Mechanical Lighting System
In addition to the luminescent-tipped hands, the DB28GS Swordfish is
equipped with De Bethune’s manual lighting system, which diffuses white
light from the four corners of the dial (3, 6, 9, 12 o’clock) to
illuminate the movement from the inside. This entirely mechanical system
functions as simply as a bicycle light, without electronics or
batteries.
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It is activated by a push-button at 6 o’clock, which
triggers a small gear driven by the dual barrel. This gear, through a
miniature dynamo, provides the energy necessary to light the watch
without affecting the movement’s operation. Once again, the manufacture
showcases its ability to blend functionality and technical excellence,
as the simplicity of this lighting function masks the intricate
engineering that only the
De Bethune technical team can fully
appreciate.
Shock Resistance and Optimal Comfort
The DB28 GS Swordfish continues the tradition of exceptional comfort
De Bethune applies to its pieces, especially within the DB28 collection.
This remarkable comfort is due to the combination of black zirconium
and hardened stainless steel, its hand-brushed and polished finish, and
the positioning of the crown at 12 o’clock.
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Additionally, it features
the patented mobile cradle system, which adapts to the size and movement
of the wrist. It has been enhanced by a DLC coating (Diamond-Like
Carbon) that adheres perfectly to the ultra-hardened stainless steel of
the cradles, ensuring resistance to shocks (unlike DLC coatings applied
to softer materials such as titanium or 316L stainless steel commonly
used in watchmaking). The
DB28 GS Swordfish cradles stand out with blued
Grade 5 titanium inserts, polished to recall the blue components of the
case and dial. The natural rubber strap also contributes to the watch’s
comfortable wear.
Performance of the DB2080 Movement
The DB28GS Swordfish meets the reliability standards set by De
Bethune’s technical department and proudly boasts flawless water
resistance to a depth of 105 meters. Its DB2080 movement is equipped
with a double barrel self-regulating system that provides a 5-day power
reserve, with performance indicated between 9 and 10 o’clock.
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The
presence of a titanium/grey gold balance wheel, designed to adapt to
temperature variations, along with a flat terminal curve hairspring,
ensures an optimal mass/inertia ratio for an ideal frequency of
28,800
vibrations per hour, suited for wristwatches.
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The watch undergoes
extensive reliability and shock resistance testing, which it passes
thanks to a triple shock absorber system that protects the heart of the
movement. A titanium bridge, equipped with shock absorbers at both ends
(ruby + blade spring) and a central damper, ensures precise position
stability of the balance wheel, even during violent impacts.
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The
DB28GS
Swordfish once again illustrates the meticulous research work of
Denis
Flageollet's teams on functional aesthetics, reliability, and technical
performance — key elements at the heart of every
De Bethune creation.
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TECHNICAL SPECIFICATIONS
Collection CURRENT DB28 Watch
Name: DB28GS Swordfish Edition
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Reference: DB28GSV2BB
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Movement: DB2080
Type: Mechanical hand-wound movement
– 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)
Technical features of calibre DB2080
Number of parts: 400
Jewelling:
35 jewels
Frequency:
28,800 vibrations per hour
Diameter: 30 mm
Power reserve: 5 days, ensured by a self-regulating twin barrel
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
DisplayDial: Black Satin-brushed grade 5 titanium minutes dial with cut-out Arabic numerals
Rotating bezel crystal with metallised minutes ring
Power-reserve indicator between 9 and 10 o’clock
Hands: Titanium hours and minutes hands with black polished steel insert and second blued polished titanium insert, luminescent tip
Polished blued titanium seconds hand with luminescent tip
Case and strap
Case material: Black zirconium case middle with “
Microlight” decoration, black brushed and polished harden stainless steel caseback and bezel
Case diameter: 44mm
Case thickness: 12.8 mm
Attachments: Floating lugs in brushed 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: Open in black polished harden stainless steel
Water resistance: 10 ATM
Strap: Natural rubber strap + 1 canvas / leather strap
Buckle: Folding clasp in black brushed harden stainless steel
🔰Edition ✅only ❱❱❱ 25 pieces
🔴Price: 105,000 CHF💰
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Press release -- Geneva 2022
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De Bethune Geneva Office
25 Grand-Rue 1204 Geneva
Switzerland
Tel: +41 22 310 22 71
Fax: +41 22 310 33 40
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