Innovation Against Magnetism The Milgauss was created for scientists and engineers, offering resistance to magnetic fields without compromising precision. Its distinctive design reflects its technical purpose and heritage. Black Dial Character This 2008 reference features a 40mm Oystersteel case with a smooth bezel and a black dial. Powered by the calibre 3131 movement, it provides approximately 48 hours of power reserve and is paired with an Oyster bracelet featuring the Easylink extension.