Calibre 401
Oris Calibre 401
Calibre 400 Series_Anti-magnetic


Swiss watch movements can magnetise, affecting accuracy. Oris's Calibre 400 Series, engineered with over 30 non-ferrous, anti-magnetic components, is highly anti-magnetic. Calibre 401 deviated less than 10 seconds a day after exposure to 2,250 gauss.

400 Series_Five-day power reserve

Five-day power reserve

Calibre 401, designed for intermittent wear, has a five-day power reserve. It uses twin barrels with extended mainsprings, each storing two-and-a-half days of power. It’s highly accurate, to -3/+5 seconds a day, surpassing a chronometer.

Calibre 400 Series_10-year warranty

10-year warranty

Oris’s Calibre 400 Series offers a 10-year warranty on watches registered at MyOris. Oris also proposes 10-year service intervals on these watches, barring accidental damage or water-resistance checks. This sets a new standard.

Technical details


Centre hands for hours and minutes, subsidiary second at 6 h
120 hrs
Power reserve
  • Number
    Oris 401
  • Dimensions
    Ø 30.00 mm, 13 1/4’’’
  • Winding
    Automatic winding, uni-directionally rotating rotor
  • Vibrations
    28’800 A/h, 4 Hz