Roger Dubuis Rose Black .Roger Dubuis Excalibur Kings Collection automatic movement watch features a 46mm case, sapphire crystal, and a carbon titanium black DLC-coated titanium alloy. It is engraved with the Geneva Seal. The watch comes with a Pirelli rubber strap, combining strength and beauty with a vibrant color palette. The double flying tourbillon skeleton technology showcases the beauty of mechanical movement!