Frederique Constant FC-312B4S4 Slimline Automatic Heart Beat Automatic Men's Watch CALIBRE Longines Calibre L595/592 revealing the inner workings of

revealing the inner workings of the automatic FC-310 movement

while the butterfly clasp adds convenience

this watch is not only a stylish accessory but also a practical timekeeping companion for the modern woman

with 21 jewels and a 72-hour power reserve

Complete with a date function and 42 hours of power reserve

Frederique Constant FC-312B4S4 Slimline Automatic Heart Beat Automatic Men's Watch CALIBRE Longines Calibre L595/592 revealing the inner workings ofThe Frederique Constant Slimline Heart Beat Automatic FC 312B4S4 is a men's watch featuring a 40mm stainless steel case with rose gold PVD coating. It has a black dial with an open balance wheel at 12 o'clock, showcasing the automatic movement. The watch is powered by the FC 312 caliber, offering a 42 hour power reserve. Additional features include a sapphire crystal, 30m water resistance, and a black leather strap with a pin buckle clasp. Reference