Frédérique Constant FC-990

FC-990 is a manual-winding in-house caliber introduced by Frédérique Constant in 2016. Based on the FC-975 architecture, it incorporates a tourbillon and minute repeater complication—among the most demanding mechanisms in haute horlogerie. The movement is produced in limited quantities, reflecting its complexity and manufacture status. It appears primarily in the brand's Slimline and Classics collections in limited editions.