Roger Dubuis Excalibur Diabolus in Machina

In their latest Haute Horlogerie creation, Roger Dubuis juxtaposes the brilliance of traditional watchmaking artisans and the most inventive modern techniques.

The Roger Dubuis Excalibur Diabolus in Machina watch incorporates two very finest horological complications: Minute repeater and flying tourbillon. With this unique creation, the brand asserts its uniqueness by combining the mysterious secrets of the noblest traditions with visionary flashes of genius through which it has achieved an uncontested position as the master of expressive and contemporary watchmaking.

The minute repeater function of this watch can be enjoyed using a push-piece that activates a ring tone with a low pitch for the hours, a high pitch for the minutes, and two tones for the quarter hours. To add more fun to this function, the watchmakers placed at 11 o’clock a disc that has been skillfully blended with a Roman numeral.

Marked with the words Hours, Quarters and Minutes, the disc starts to turn as soon as the minute repeater is activated, visually illustrating the time intervals being chimed. To achieve this, the watchmakers have enriched this second visual indication with the minute repeater’s main feeler-spindle system, which requires mechanically seeking information on the time before striking it.

A second functional indicator – in the form of a lever placed between 3 o’clock and 4 o’clock – instantly lets the wearer know whether the watch is in “manual winding” or “time setting” position. This visual safety feature is extremely important as adjusting the watch while the minute repeater is playing can damage the movement.

Finally, one other function has been developed to make life easier for the user. This is the minute repeater’s pushpiece, which has been embellished with a mechanism called “all or nothing”. Only allowing the minute repeater to be triggered if the pusher has been fully and completely pressed, this second safety feature prevents the mechanism from being triggered or providing merely a partial indication of time.

Roger Dubuis combines this major complication with its famous flying tourbillon, which has been an integral part of the brand’s identity right from the start. Roger Dubuis has chosen to tune its minute repeater to the sound of the tritone, the famous “Diabolus in Musica” chord outlawed in medieval religious music, and found, for example, in Camille Saint-Saëns’s symphonic poem, Danse Macabre.

Technical details

Model: Excalibur Diabolus in Machina
Reference: RDDBEX0842

Skeletonized, Ø45 mm, case, bezel and crown CarTech Micro-Melt BioDur CCMTM (® in the USA). Case back CarTech Micro-Melt BioDur CCMTM (® in the USA) with sapphire crystal and anti-reflective treatment.
Thickness: 16.8 mm

Double surface flange with engraved minute track, transferred texts
Polished hour markers filled with SL
Water resistance: 3 BAR (30 m)

RD0107 Calibre: Mechanical automatic with minute repeater and single flying tourbillon
Production: Unique series 1 of 1
Decorations: circular-grained or trued-up or shot-blasted or Cotes de
Genève and NAC coated bridges and plate
Number of parts: 558 components
Jewels: 54 rubies
Diameter: 14 ¾’’’
Thickness: 10 mm
Frequency: 3 Hz (21’600 vph)
Power-reserve: 60 hours

Hours, Minutes, Minute repeater, function indicator, chiming indicator

Interchangeable 3D calf leather strap
Buckle: Interchangeable titanium cover with titanium triple folding buckle

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