Frederique Constant Watch Highlife Perpetual Calender FC-775N4NH6B. The Highlife Perpetual Calendar Manufacture epitomises this approach. Highlife is the revival of a legendary line, part of an historic collection that has shaped the face of luxurious and affordable contemporary Swiss Made watchmaking. Perpetual Calendar describes a level of complication to which few brands have access, an indication of technical mastery patiently acquired over the course of more than 30 years watchmaking experience. Finally, Manufacture is a declaration, about belonging to an exclusive club of watchmakers capable of designing, producing, assembling and testing their own timepieces.