Its engineers identified that one of the most frequent issues with automatic mechanical movements concerns the ball-bearing system that allows the free-spinning oscillating weight to rotate. One of Oris' fundamental ambitions with the Calibre 400 was to eliminate problems before they occur. The black dial boasts a wave motif, with indices and hands coated with Super-LumiNova.Ĭonceived entirely in-house, the Calibre 400 has a five-day power reserve, delivered by the use of twin barrels, both of which house an extended mainspring, each long enough to store two-and-a-half days of power. The new 49.5mm AquisPro Date Calibre 400 is housed in a high-grade, lightweight titanium case plated in low-glare black DLC.
Oris has raised the bar in mechanical watchmaking by equipping the professional diver's watch with the automatic winding Calibre 400. Designed for saturation dives, the AquisPro Date is a highly technical tool watch chosen by divers who work on complex engineering projects in helium-enriched environments hundreds of metres below the water's surface.
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