The Rolex Milgauss reference 116400GV-0002 is a 40mm luxury tool watch designed for resistance to magnetic fields up to 1,000 gauss. This model is constructed from Oystersteel and is distinguished by its electric Z-Blue dial, which features a metallic sunray finish. A signature element of this reference is the green-tinted sapphire crystal, which creates a luminous halo around the dial’s edge. The dial is further accented by an orange lightning-bolt-shaped seconds hand and Chromalight luminescent hour markers that emit a long-lasting blue glow in dark conditions. It is fitted with an Oyster bracelet featuring three-piece flat links and an Oysterclasp with a 5mm Easylink comfort extension for easy adjustments.
The watch is powered by the COSC-certified caliber 3131 perpetual, mechanical, self-winding movement, which provides a power reserve of approximately 48 hours. To achieve its high level of magnetic resistance, the movement is protected by an internal Faraday cage made of ferromagnetic alloys. As a time-only instrument, its complications are focused on precision and utility, including central hour, minute, and seconds hands along with a stop-seconds function for accurate time setting. The Twinlock screw-down crown and monobloc middle case ensure a water resistance rating of 100 meters.
General reviews of the Milgauss Z-Blue highlight its unique and playful aesthetic, noting that it stands out as one of the most colorful and unconventional designs in the Rolex catalog. Enthusiasts often praise the interaction between the Z-Blue dial and the green sapphire crystal, which can shift between shades of blue and turquoise depending on the lighting. While some critics find the combination of blue, green, and orange elements to be polarizing or less versatile than more traditional Rolex models, others value it for its scientific heritage and its status as a distinctive conversation piece. Its weight is frequently described as substantial yet comfortable, though the thickness required for the magnetic shielding makes it slightly bulkier than a standard Datejust or Explorer.