The Blancpain Fifty Fathoms is a legendary dive watch that was first introduced in 1953. Designed in collaboration with French Navy divers, it is considered one of the first modern dive watches. It features a robust steel case with a unidirectional rotating bezel, a water resistance of up to 300 meters, and a notable automatic movement with a 120-hour power reserve. The watch is easily recognizable by its black dial and sailcloth strap.