This International Standard specifies the minimum requirements and test methods for magnetic resistant watches.
It is based on the simulation of an accidental exposure of a watch to a direct current magnetic field of 4 800 A/m.
Annex A deals with watches designated as magnetic resistant with an additional indication of intensity of a magnetic field exceeding 4 800 A/m.
ISO 764:2002 history
2020ISO 764:2020 Horology — Magnetic resistant watches
2002ISO 764:2002 Horology - Magnetic resistant watches