Calibre 400 recorded one third of the deviation allowed after exposure to more than 11 times the force permitted, making it a highly anti-magnetic movement. For context, the latest version of the ISO 764 standard for anti-magnetic watches requires that to qualify as anti-magnetic, a watch must be accurate to within 30 seconds a day after exposure to 200 gauss. It was made clear that it was meant to be both accessible and reliable. In testing by the renowned Laboratoire Dubois, Calibre 400 deviated by less than 10 seconds a day after exposure to 2,250 gauss. When the in-house Oris caliber 400 was introduced in June of 2021, it set a new standard for Oris, and on a larger scale, the industry. To make it highly antimagnetic, Oris engineered Calibre 400 using more than 30 non-ferrous and anti-magnetic components, including a silicon escape wheel and a silicon anchor. When this happens, they become less accurate, and can stop altogether. This is the new standard.Most Swiss watch movements will be magnetised if exposed to the strong magnetic forces we encounter in daily life. This means that barring accidental damage or waterresistance checks, you shouldn’t need to bring in a Calibre 400 watch for a service until 2030 at the earliest. In addition, Oris is also proposing 10-year recommended service intervals on Calibre 400 watches. Oris is so confident in the performance of the advanced technologies integrated into Calibre 400 that we are offering a 10-year warranty on all Oris watches powered by the new movement when you register them at MyOris. It delivers this longer period of use via twin barrels, both of which house an extended mainspring, each long enough to store two-and-a-half days of power. Calibre 400 has a five-day power reserve, so it’ll still be running if you’ve not worn your watch between, say, Thursday and Tuesday. If you put a standard mechanical watch down for a day or two, it will stop as the power reserve runs down. When conceptualising Calibre 400, Oris’s engineers recognised that these days we may not wear the same watch every day. It has a five-day power reserve (120 hours), is highly resistant to magnetism, and comes with 10-year recommended service intervals and a 10-year warranty. Calibre 400 is an entirely new movement, independently conceived by Oris, and sets the new standard for automatic mechanical movements.

Oris calibre 400 issues