Roger Dubuis is a Swiss watch manufacturer founded in 1995 by watchmaker Roger Dubuis and designer Carlos Dias, based in Meyrin near Geneva and owned by Richemont. Its principal collections are the Excalibur, Excalibur Spider, Knights of the Round Table and Monovortex. Every Roger Dubuis movement carries the Poincon de Geneve, the Geneva Seal - the maison certifies its entire production, which no other house of its scale does - and it is best known for skeletonised astral-star bridges and double flying tourbillons, plus motorsport partnerships with Lamborghini Squadra Corse and Pirelli.