Blancpain Fifty Fathoms Automatique

Blancpain's Fifty Fathoms Automatique 5010 3630 B64B is a 42.3 mm dive watch case in red gold. The case measures 14.3 mm thick, with a lug width of 21.5 mm. The black dial sits under a sapphire crystal and shows central seconds alongside a date window. Inside is the self-winding calibre 1315, which runs on a substantial 120 hour power reserve. A rubber strap closes with a folding clasp. Blancpain rates the case to 300 metres, a figure that fits a watch built for the water rather than the desk.