Calibre 403

Anti-magnetism

Swiss watches can be magnetised, affecting accuracy. Oris' Calibre 400 Series uses over 30 non-ferrous, anti-magnetic components for high anti-magnetism. Tests by Laboratoire Dubois showed Calibre 403 deviated under 10 seconds a day after 2,250 gauss exposure.

Five-day power reserve

Mechanical watches stop if not worn daily. Oris' Calibre 403, with a five-day power reserve, is ready when you are. It achieves this via twin barrels with extended mainsprings. It's highly accurate, to -3/+5 seconds a day, surpassing a chronometer.

10-year warranty

Oris offers a 10-year warranty on watches powered by the Calibre 400 Series, reflecting confidence in their advanced technologies. Registration at MyOris is required for the warranty extension. Oris also recommends 10-year service intervals for these watches.