Blancpain Fifty Fathoms 70th Anniversary Act 3

Blancpain's Fifty Fathoms 70th Anniversary Act 3, reference 5901 5630 NANA, comes in a 41.3 mm bronze case, a dive watch through and through. The case measures 13.3 mm thick, with a 20 mm lug width for the strap. A sapphire crystal covers the black dial, which carries a central seconds display. The self-winding calibre 1154.P2 drives the watch and stores 100 hours of power reserve. A unidirectional rotating bezel handles dive timing, and the piece is fitted with a textile strap on a pin buckle. Blancpain rates the case to 300 metres, generous for a watch built around a bronze construction.