Playing with the highest standards of Haute Horlogerie, Roger Dubuis presents a new interpretation of its signature movement, the double flying tourbillon. The Excalibur Twofold is a perfect illustration of its expressive singularity and know-how that is even more striking in the dark. This incredible horological creation represents three world premieres. With a 45mm case, the glacial touch of Excalibur Twofold is enhanced by the bezel and the case created in Mineral Composite Fiber (MCF), an ultra-white composite material made of 99.95% silica and, specifically developed by Roger Dubuis. A never-yet seen prowess in the world of Haute Horlogerie. The Sheet Molding Compound (SMC) process mastered by Roger Dubuis engineers enables the Manufacture to play with this unique Mineral Composite Fiber.