Roger Dubuis Excalibur Perpetual Calendar Quatuor

For the first time, the Quatuor and Perpetual Calendar complications are combined in the same timepiece. Blending instantaneity and perpetuity, the in-house calibre RD116 is supported by three distinctive patents introduced in 2013. A showcase of Roger Dubuis’ signature material, Cobalt Chrome.

Driven by the forces of gravity and planetary cycles, Roger Dubuis marks the first ever combination of the Quatuor and Perpetual Calendar complications. By combining its futuristic four-balance wheels architecture with a symbol of traditional complexity, this audacious leap in engineering is not simply a timepiece, but a powerful statement of virtuosity. A creation made by passionate watchmakers — especially for connoisseurs of fine horology.

Introducing the Excalibur Perpetual Calendar Quatuor. A limited edition of just 8 pieces.

Two Complications United

The Quatuor, with its compensation for gravity, and the Perpetual Calendar, which follows the natural rhythms of the cosmos, are both complications that explore the relationships between Earth and its celestial neighbours.

Never before have they appeared in the same timepiece, yet these two complications are emblematic of Roger Dubuis and the theatrical high watchmaking that defines the Maison. With this year's novelties guided by an astronomical influence, it seemed like the perfect opportunity to combine them in one showstopping creation.

This Perpetual Calendar Quatuor calibre, the RD116, has achieved that ambitious goal through 758 components. It is built with three patents, including one on the gravity compensation system and one on the power reserve mechanism. 14 decoration techniques are performed by hand on each component of the calibre in the Maison’s Geneva Manufacture.

They include: wheel-bevelling, tool-bevelling, frosting, circular graining, truing, internal drawing, external drawing, rounding, perlage, tip polish, teeth polishing, mirror polishing, inner wheel bevelling, and burnishing.

Ingenuity of the Quatuor

In a regular mechanical watch, gravity can affect how accurately the balance wheel oscillates when the watch is turned in different positions on the wrist. Traditional solutions like a tourbillon have been able to average that effect by rotating the balance.

In 2013, Roger Dubuis took a more radical approach, creating its own tourbillon for the 21st century by using four balance wheels all working together. A patented system that instantly compensates the effects of gravity regardless of orientation.

Importantly, the four balances are tilted - arranged in pairs at 90° angles to each other - and connected by a complex system of five differentials, which efficiently distribute the energy and counter any possible resonance effects.

Achieved through more than 7 years of research and trial, the Quatuor is a genuine work of science and modernity. A technical milestone that has driven Genevan excellence to alternative realities of performance.

A Perpetual Favourite

For emotional reasons, the Perpetual Calendar is also a cherished complication at Roger Dubuis: the first watch launched by the Maison included a perpetual calendar.

The Maison’s founder, Mr. Roger Dubuis, was particularly drawn to the challenge of the Perpetual Calendar, as his patient nature and quiet perseverance was ideally suited to the complication's complexity.

The complication has therefore remained a lasting signature, often expressed alongside other complications, such as the tourbillon, chronograph or minute repeater.

To now match with the aesthetic alignment of the Quatuor’s four round balance wheels, this Perpetual Calendar is shown in a classic circular form, displaying the days, date, months, and leap year counters, along with the power reserve indicator, all arranged in a symmetrical quadrant. A key functional upgrade compared to previous Perpetual Calendar movements is the addition of a month corrector, which allows the month indication to be manually set with one simple adjustment. This new evolution makes regulation much faster and easier, while also preventing over-use of the function.

The Patented Power Reserve

As always with Roger Dubuis, singularity is a key driver of design. Along with the Quatuor concept, the second patent featured within the Calibre RD116 is the one-handed Power Reserve indication, placed at 9 o'clock.

This original mechanism has a double 180º display. When the watch is functioning, both the indicator and the hand move at different speeds around the axis, giving a purely theatrical performance to signal watch’s remaining energy.

The Excalibur Perpetual Calendar Quatuor is delivered with a dedicated winding device, which is specifically programmed to the Calibre RD116. When kept in this box each day, the watch can always remain wound.

A Signature Material

Highlighting the technical proficiency at Roger Dubuis, Cobalt Chrome has become a signature material of the Maison.

First created for the automotive, aeronautical, and aerospace sectors - fields where durability and dependability are essential - this advanced alloy is engineered to meet the demands of modern life. Beyond its striking brilliance, Cobalt Chrome offers exceptional scratch resistance, corrosion resistance, and non-magnetic properties.

Since 2017, Roger Dubuis has embraced Cobalt Chrome as a hallmark material, notably using it for the upper bridge of its tourbillon cages, where its radiant finish is matched by valuable anti-magnetic performance.

For this latest timepiece, the full 48 mm case is fashioned from this alloy, technically designated Cobalt Chrome Cartech® Micro-Melt® Biodur® CCM® - a Carpenter Technology's trademarked name reflecting its cutting-edge development.

Other elements of the watch, such as the flange and the Perpetual Calendar counters, are coloured blue, as a nod to the organic colour of cobalt found in nature. To match those tones, the case is set on a blue calf-skin leather strap, featuring the versatile Quick Release System.

As with all Roger Dubuis creations at Watches and Wonders Geneva 2026, the Maison has drawn inspiration from the movements of the sky, and the stellar observations that have shaped humanity’s understanding of time and space. Through precise calendars and horological displays, these novelties do not merely indicate the hours, they also pay tribute to the motion and beauty found beyond our planet, awakening the imagination, and embodying the precision and mysteries within the universe.

Technical specifications

Roger Dubuis Excalibur Perpetual Calendar Quatuor

Reference: RDDBEX1127

Limited edition of 8 pieces

Case

• Material: Cobalt case
• Diameter 48 mm
• Thickness 20.20 mm
• Open case back
• Water-resistant to 10 BAR / 100 meters

Dial and hands

Level 1: The flange

• Double surface flange satin brushed
• Transferred text and minute track
• Rhodium plated hour markers, polished with SLN

Level 2: Calendar segments

• Sapphires glass with metallization.

Level 3: Discs

• Day, date, month discs are in sapphires glass with metallization.

Hands

• Hour, minute hands in white gold 750/1000, with satin brushed.
• Varnished and SLN on the tips.

Movement

• Calibre RD116
• Manual winding movement
• 14 decorations: Wheel-beveling, tool-beveling, frosting, circulargraining, truing, internaldrawing, externaldrawing, rounding, perlage, tip polish, teethpolish, mirrorpolish, innerwingbeveling, burnishing
• Frequency: 4 x 4Hz / 28’800 vibrations per hour
• Diameter 18 ¾ lignes
• Thickness 13.75 mm
• Number of parts: 758
• Number of jewels: 86
• Power reserve of 40 hours

Functions/Indications

• Hours, minutes, seconds
• Perpetual calendar with day, date, month and leap year
• Quadruple balance

Strap and buckle

• Calf leather strap, interchangeable thanks to QRS.
• Titanium, triple folding buckle

MSRP: TBC

For more information, please visit rogerdubuis.com