The construction and the aesthetic of the DB28 Maxichrono proudly illustrate the simplicity of the initial approach adopted by founders of De Bethune. This year the Swiss luxury watch brand unveils a titanium version of this exceptional model. Production of this new version will be limited to 20 units in 2015.
Showcasing extreme dial clarity and ultra-legible chronograph indications by means of its five central hands, this innovative chronograph is also equipped with a high-frequency calibre featuring optimised chronometric precision applied to the measurement of long periods of time. The single pusher at 12 o’clock preserves the comfortable design of the DB28 collection’s characteristic case.
This chronograph owes its dial architecture, built around give central hands, to a deliberate desire to improve on the aesthetic and functional readability of traditional chronographs, which is often impaired by the presence of small counters. The curves of the distinctively profiled hands closely follow the rounded contours of the silver-toned dial.
The DB28 Maxichrono is above all a contemporary chronograph featuring a mono -pusher/12 o’clock crown tandem that controls the central hands remarkably mounted on the same axis according to vertical sequence of nested gear trains and pillars representing an impressive technical feat.
The back of the watch, providing a window on the movement, features a pared -down, architectural arrangement of the hand-polished bridges of Calibre 2030, in which the complex mechanism of an innovative chronometric system is notably distinguished by its three column wheels.
The Calibre DB2039 is equipped with the De Bethune total clutch system , a patented chronograph invention. De Bethune’s research and development department has announced the filing of a patent application n° CH00076/14 for the chronograph mechanism. De Bethune’s absolute clutch aims to improve the performance of chronographs by correcting the faults identified in current mechanisms. This mechanism makes the most of the advantages of the horizontal and vertical clutch systems while eliminating their faults. It thus benefits from a marked reduction in the friction that affects the movement both when the chronograph is running and when it is functioning without the chronograph engaged.
The absolute clutch operates in a system engaging the two traditional clutch methods to allow the different chronograph counters to function semi-autonomously:
- The chronograph seconds are governed by the new absolute clutch system;
- The minutes counter is controlled by a shifting pinion;
- The hours counter is engaged by a horizontal clutch.
Three different types of clutch behind three semi-independent systems controlled by three column wheels thus govern the different chronograph elapsed-time counters. In this way De Bethune marks a significant technological breakthrough in the history of chronographs, the result of continuous research heralded by the DB21 Maxichrono in 2006. Constant innovation relying on an extensive knowledge of age-old expertise has enabled the brand to simplify and enhance the reliability of the absolute clutch system so that it can be implemented in a movement manufactured by the production workshops in the Swiss village of L’Auberson.
Model: DB28 Maxichrono Titane
Limited annual production: only twenty will be issued in 2015
Hours & minutes
Mono-pusher chronograph with 24-hour, 60-minute and 60-second counters
DB2030 calibre, mechanical hand-wound movement
Diameter 30 mm
Hand-crafted finishing and decoration
3 column wheels
De Bethune absolute clutch
Self-regulating twin barrel
Silicon/white gold balance wheel – balance-spring with flat terminal curve
Silicon escape wheel
Jewelling: 47 jewels
Frequency: 36,000 vibrations per hour
Power reserve: 5 days
Mirror-polished grade 5 titanium
Diameter: 45 mm
Thickness: 11 mm
Short or long floating lugs in mirror-polished titanium
Crystal: sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment
Crown at 12 o’clock – mono-pusher button – setting in 2 positions
Back: open – sapphire crystal, 1800 Vickers hardness with double anti-reflective treatment –chronograph calibre with hand-polished steel bridges
The architecture of the dial is constructed on different levels to maximise visibility
From the centre to the periphery: central hours counter, hours inner ring, minutes ring and minutes counter and outer ring with chronograph seconds indication
5 curved central hands
Hand-polished and flame-blued steel for the hours and minutes hands and flame-blued steel for hours and seconds chronograph indicators
Chronograph minutes indicator in rose gold
Extra-supple alligator leather strap with pin buckle
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