Shaping the future of hyper-tech material. Roger Dubuis crafted the Excalibur Spider Huracán MB case and bezel from pure white Mineral Composite Fibre (MCF), a material exclusively developed in-house. The hyper-tech MCF is 13% lighter than SMC carbon, providing the greatest in wrist comfort. #RogerDubuis #NoRulesOurGame #Excalibur