he skeleton calibres manufactured by Roger Dubuis in Geneva are the essence of the expressive singularity of the Excalibur collection. Complying with one of the most respected certifications of Haute Horlogerie, the Poinçon de Genève, the Excalibur watches are designed like contemporary works of art.

One of the latest developments in the Excalibur collection is a calibre with improved performances: increased power reserve up to 72 hours thanks to a new gear train toothing and escapement optimization through its geometry, improved durability thanks to new lube, and increased precision thanks to 4hz frequency.

Roger Dubuis is now collaborating with Hajime Sorayama to release a new Excalibur Monobalancier mixing both creative territories of the artist and the brand. The star-shaped bridge redesigned by Sorayama, turns curvy and fully polished - so do the titanium case and bracelet, like an echo of his metallic 3D sculptures. The micro rotor displays a moiré effect, with a fixed fringed sapphire glass and a mobile engraved metallic part, to remind the artist’s obsession about light reflection. The white lacquered box is adorned with hot-stamped Roger Dubuis with Sorayama font.

TECHNICAL SPECIFICATIONS

Movement

• RD720SQ
• Movement energy: Automatic, self-winding
• Complication: Monobalancier
• Caliber: A calibre with improved performances: increased power reserve up to 72 hours thanks to a new geartrain toothing and escapement optimization through its geometry. Improved durability thanks to new lube, and increased precision thanks to 4hz frequency.
• Finishing: Shot-blasted and trued-up main plate and bridges with NAC
• Functions: Hours, minutes
• Frequency: 4 Hz / 28’800 Vibrations per Hour
• Power Reserve: 72 Hours
• Diameter Lines: 16 3/4
• Thickness: 5.95 Millimeters
• Number of Pieces: 178
• Number of Rubis: 32

Case

• Polished titanium case
• Polished titanium bezel
• Polished titanium crown
• Sapphire crystal with anti-reflective coating
• Polished titanium open case back with sapphire crystal
• Diameter: 42 Millimeters
• Water resistance: 10 BAR (100m)
• Dial

• Rhodium plated double surface flange with engraved minute track and transferred texts, polished and grey hour markers with SLN in the center

Hands

• Triple surface hands in white gold 750/1000 with satin brushed finish on the tilted surfaces - shot-blasted finish on the flat grey surface, SLN tips

Strap

• Full polished titanuim bracelet, interchangeable with Quick Release System - QRS
• Triple folding buckle titanium cover with titanium blades.