Roger Dubuis Excalibur Double Tourbillon White Ceramic

Roger Dubuis presents the Excalibur Double Tourbillon White Ceramic RDDBEX0952, a 45 mm limited edition case in white ceramic. The case measures 7.35 mm thick and carries a sapphire crystal with anti-reflective coating over an open, skeletonised dial. The manual-winding calibre RD108SQ drives a double flying tourbillon, its two carriages linked by a differential for smoother energy transmission, and offers 72 hours of power reserve. The movement bears the Poinçon de Genève, Roger Dubuis' own Geneva Seal certification, and can be viewed through the sapphire display back. A white calf leather strap closes with a folding clasp in rose gold. Only eight pieces of this piece exist. Roger Dubuis rates the case to 100 metres.