Romain Gauthier Logical One was launched in 2013, this one is a 18k white gold (2015) with a 43mm diameter. Movement is wound by a push-button with innovative chain-and-fusee style constant force system, 46hrs power reserve. The movement is in 4.5N rose gold treated. The Logical One was the winner for the Best Men’s Complication of 2013 Grand Prix d’Horlogerie de Genève. Priced at 125,000CHF