Rolex Oyster Perpetual Milgauss 116400GV. Steel 40mm case which is water resistant to 100 meters. Automatic chronometer movement. Z Blue dial with applied luminous hour markers and luminous hands, orange outer graduated numeral markers with orange lightning second sweep. Polished steel bezel. Steel Oyster lock bracelet. The Milgauss model is a very recent re-introduction of a model originally designed in the 1950`s in response to a demand for a highly resistant watch to anti-magnetic fields. The movement is protected by an inner anti magnetic protection up to 1,000 gauss. Box and papers dated February 2018. Our Reference A1841.