The Rolex Milgauss, with its distinctive green sapphire crystal and anti-magnetic properties, holds a unique place in the Rolex lineup. While its striking aesthetics are instantly recognizable, the heart of the watch, the movement, often goes unnoticed. This article will delve into the intricacies of the Rolex caliber 3131, the movement powering the iconic Milgauss 116400, including the highly sought-after Z-Blue 116400GV variant. We'll also explore the various price points associated with this model and its predecessors, using information gathered from various sources to create a comprehensive price guide.
The Rolex caliber 3131, the engine driving the Milgauss 116400, isn't just a simple timekeeping mechanism; it's a testament to Rolex's unwavering commitment to precision and innovation. Based on the robust and reliable caliber 3130, which itself is a descendant of the legendary caliber 3000 series, the 3131 boasts several key improvements and unique features designed to meet the specific demands of the Milgauss's anti-magnetic capabilities. The 3130, found in other Rolex models, already represents a high standard of horological excellence, characterized by its accuracy, robustness, and longevity. However, the 3131 takes things a step further.
One of the most significant differences between the 3130 and the 3131 lies in the enhanced anti-magnetic properties. The Milgauss, as its name suggests (Mil = 1000, Gauss = unit of magnetic field strength), is engineered to withstand magnetic fields of up to 1000 Gauss. This is a significant feat, considering the increasing prevalence of magnetic interference in our modern world, from smartphones to computers and medical equipment. The caliber 3131 achieves this impressive resistance through a combination of carefully selected materials and a specially designed Faraday cage. This cage, effectively shielding the movement's delicate components, ensures accurate timekeeping even in the presence of strong magnetic fields. The exact construction details of this Faraday cage are proprietary information, adding to the mystique surrounding the watch's anti-magnetic prowess.
Beyond its anti-magnetic capabilities, the caliber 3131 shares many of the hallmarks of other high-quality Rolex movements. It's an automatically wound mechanical movement, meaning it uses the natural movement of the wearer's wrist to wind the mainspring, eliminating the need for manual winding. This self-winding mechanism is incredibly efficient, ensuring consistent power reserve. The movement also features a paramagnetic blue Parachrom hairspring, a Rolex-patented innovation that offers superior resistance to shocks and temperature variations compared to traditional hairsprings. This contributes to the watch's overall accuracy and reliability.
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