Frederique Constant Geneve. Classics Quartz Business Timer. Through this unique family name, Frederique Constant has not only breathed new life into classic watchmaking but given concrete expression to its founding mission: to make luxury timepieces accessible to as many people as possible. This iconic collection is affirming its timeless charm with a more modern, stronger, more contemporary design. The Business Timer collection offers a complete quartz caliber with day, date, week number and moonphase. Easy to set up and read, the Classics Index Business Timer is offered with a 40mm case diameter either in stainless steel or rose gold plated. WR 60M.