Blancpain Bathyscaphe Quantième Annuel

Blancpain's Bathyscaphe Quantième Annuel, reference 5071 1110 71S, is a dive watch with a 43 mm steel case. The case measures 13.1 mm thick, with a lug width of 23 mm. A unidirectional rotating bezel surrounds the sunburst grey dial, which sits under a sapphire crystal. The self-winding calibre 6054.P.4 drives the watch, with 72 hours of power reserve. The annual calendar tracks the date across months of different lengths, adjusting automatically, while a central seconds hand runs alongside it. A steel bracelet with a folding clasp completes the piece. Blancpain rates the case to 300 metres.