The defining feature of the Milgauss 116400GV is visible immediately through its striking green sapphire crystal, a detail exclusive to this reference within the Rolex catalogue for many years. Combined with the vivid orange lightning seconds hand and highly polished Oystersteel case, the watch carries an unmistakably modern and experimental personality. The green crystal subtly changes character depending on lighting conditions, giving the watch remarkable visual depth and individuality on the wrist.

Inside the case sits the Rolex Calibre 3131 movement, protected by an internal magnetic shield engineered specifically for high magnetic environments. Rolex designed the Milgauss collection for scientists, researchers, and engineers requiring stable chronometric performance under magnetic exposure. The 116400GV has since become one of the most distinctive modern Rolex references due to its unique combination of scientific engineering and unconventional aesthetics.