Blancpain Fifty Fathoms Automatique

Blancpain's Fifty Fathoms Automatique, reference 5010 3630 B52A, comes in a red gold case measuring 42.3 mm across. The case stands 14.3 mm thick, with a lug width of 21.5 mm, and a sapphire crystal covers the black dial. Inside is the self-winding calibre 1315, which stores 120 hours of power reserve. Central seconds and a date function round out the display. The dial gives clean, uncluttered legibility against its black background. A sail-canvas strap closes with a pin buckle. Blancpain rates the case to 300 metres, a solid figure for a dive watch built on this scale.