Blancpain Fifty Fathoms Automatique

Blancpain's Fifty Fathoms Automatique, reference 5010 3640 O64A, comes in a 42.3 mm red gold case. The case measures 14.3 mm thick, with a lug width of 21.5 mm. A sapphire crystal covers the sunburst blue dial. Inside is the self-winding calibre 1315, which runs on a 120 hour power reserve. The watch shows the date and a central seconds display, and the secured movement construction protects the mechanism when setting the time. It is fitted to a rubber strap with a pin buckle. Blancpain rates the case to 300 metres.