Explore models fitted with this calibre

RD821B

Bi-retrograde jumping date
Perpetual calendar watch | RD821J

RD821J

Perpetual calendar
Automatic movement | RD821

RD821

Automatic

A remarkable technical feat appreciated as a Swiss watchmaking masterpiece

Highlights

Roger Dubuis’ unique RD821J instantaneous in-line perpetual calendar watch provides a perfectly readable display of the day, date and month through apertures appearing in a straight line.

Highlights

Roger Dubuis’ unique RD821J instantaneous in-line perpetual calendar watch provides a perfectly readable display of the day, date and month through apertures appearing in a straight line.

1250 hours of manufacturing, including 380 hours devoted to the Poinçon de Genève.

1250 hours of manufacturing, including 380 hours devoted to the Poinçon de Genève.

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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Technical specifications

Features

  • Type: Self-winding mechanical caliber
  • Function: Perpetual calendar
  • Power reserve: 48

Decorations

  • Rhodium-plated
  • Côtes de Genève decoration
  • Poinçon de Genève finishings

Specifications

  • Reference: RD821J
  • Components: 358
  • Jewels: 33
  • Diameter: 12 3/4
  • Thickness: 5.28 mm
  • Frequency: 4 Hz (28'800 vph)
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