Roger Dubuis

Excalibur Blacklight

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Excalibur Blacklight
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Roger Dubuis is going over the rainbow with a new variation of the Excalibur Blacklight edition. Set with round colored gems, the case houses the skeleton automatic calibre decored with a micro‑sapphire structure tainted in all colors of the rainbow. Under UV light, the timepiece transforms into a beautiful and modern object revealing its inner structure. Switch on the UV lights and it will glow!

Roger Dubuis_Excalibur_Blacklight_RDDBEX0804


  • RD820SQ Automatic skeleton watch with micro-rotor
  • Self-winding mechanical calibre
  • Power reserve: 60 hours
  • Case: 42mm ,
  • Limited edition of 28 pieces
  • Stamped with the Poinçon de Genève

hours of manufacturing dedicated to this calibre


BAR - Water Resistance


components in this calibre

Poinçon de Genève

The ultimate guarantee of the finest traditional watchmaking. Roger Dubuis makes it a priority, when producing this timepiece, to follow only the most demanding & strictest criteria for quality and craftsmanship.

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Automatic skeleton watch with micro-rotor

The first automatic skeleton watch of Roger Dubuis with micro-rotor movement

About this calibre

Technical specifications

Inner & Outer casing

  • ReferenceRDDBEX0804
  • Case size: 42mm
  • Case:
  • Dial:Rhodium plated flange with transfered texts and minute track, Rhodium plated and polished hour markers. Micro-rotor bridge set with round diamonds.
  • Water Resistance:3BAR (30 m)

Strap & Clasp

  • Strap:Rubber strap
  • Clasp:White gold, double folding


  • Automatic skeleton watch with micro-rotor
  • Power reserve: 60 hours
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