Blancpain Fifty Fathoms Automatique

Blancpain's Fifty Fathoms Automatique, reference 5010 3640 O52B, comes in a 42.3 mm red gold case. The case measures 14.3 mm thick, with a lug width of 21.5 mm suited to the sail-canvas strap fitted here. A sapphire crystal covers the sunburst blue dial. Inside is the self-winding calibre 1315, which delivers a notably long 120-hour power reserve. Central seconds and a date function round out the display, both easy to read against the blue sunburst finish. The strap closes with a folding clasp. Water resistance is rated to 300 metres, generous for a dress-leaning gold sports watch of this kind.