Greubel Forsey
Greubel Forsey is a small high-end luxury watch brand that was founded in 2004 by Robert Greubel and Stephen Forsey, and is based in Switzerland. In 2006 the Richemont Group acquired a 20% stake in the company. Greubel Forsey has invented a wide array of tourbillon-based watches, for example the Double Tourbillon 30° (DT30°), Quadruple Tourbillon à Différentiel, Tourbillon 24 Secondes Incliné.