Blancpain Fifty Fathoms Automatique

Blancpain's Fifty Fathoms Automatique, reference 5007 3644A B52A, is a dive watch cased in red gold measuring 38.2 mm across. The case stands 12 mm thick and carries a unidirectional rotating bezel along with a sapphire crystal. Under the crystal, the mother-of-pearl dial shows a subtly graduated black gradient and a central seconds hand. Movement is the self-winding calibre 1153, which stores 100 hours of power reserve. The lug width measures 19 mm, sized for the sail-canvas strap fitted with a pin buckle. This is a dress-leaning take on Blancpain's diving line rather than a tool watch, though the case still carries genuine dive-rated water resistance. The pin buckle secures a case that Blancpain rates to 300 metres.