Scientific Precision Originally launched in 1956, the Rolex Milgauss was designed for scientists and engineers working in environments with strong magnetic fields. Its innovative movement and distinctive lightning-bolt seconds hand have made it a unique presence in the Rolex collection. Antimagnetic Mastery This 2012 reference 116400GV features a 40mm Oystersteel case with a smooth bezel and black dial, protected by a green-tinted sapphire crystal. Powered by the calibre 3131 automatic movement, it offers a 48-hour power reserve and is fitted with an Oyster bracelet and Easylink Oysterclasp. A bold and technical expression of Rolex ingenuity.