The joy of mechanics rises to the surface in a smaller version of Oris’s versatile diver’s watch powered by the game-changing in-house automatic Calibre 400. With elevated levels of anti-magnetism, five days of power reserve, accuracy superior to the chronometer standard (even after exposure to magnetism), 10-year recommended service intervals and 10-year warranties on all watches they power, Calibre 400 Series sets the new standard in Swiss Made automatics. For the first time, Oris Calibre 400 appears in an Aquis Date with a smaller 41.5 mm case.