It also offers "perfect concentric oscillations" and is completely antimagnetic.
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As a world first, the movement boasted the latest technological advances in the science of isochronism, with balance spring, escapement wheel and lever in silicium, a material known for its antimagnetic properties.
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Gst antimagnetic seal Anti-magnetic seal (from ) or anti-magnetic sticker, indicator of the magnetic field is a device that serves to indicate the influence of magnetic fields on the protected object and helps to reduce theft of energy (electricity, water, gas, heat, fuel).
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In 2001, Sanyo held a promotional agreement with Palm to redesign Sanyo coats for the business traveler, featuring antimagnetic shields to prevent shock from static electricity and protection from radio waves."Compressed Data: When the Digitally Enhanced Face the Elements", New York Times, April 9, 2001. In 2007, Sanyo Shokai New York, Inc. went online for the first time at with the launch of the Fall 2007 collection.
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The first recorded experiments in anti-magnetic watch-making are in 1846. Watchmakers from Vacheron Constantin were among the first to experiment with anti-magnetic features of a watch. However, they succeeded in assembling the first antimagnetic watch only several decades later. That watch was able to withstand magnetic fields because some of its parts were made of non-magnetic metals: the palladium-made balance wheel, balance spring and the lever shaft.
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The Rolex Milgauss series of antimagnetic certified chronometers was first manufactured in 1954 with the model 6541 for those working in nuclear, aircraft, and medical settings associated with strong magnetic fields. The watch has an advertised magnetic flux density resistance of 1 000 gauss within magnetic fields of 80 000 A/m. In 2007, after being out of production for nearly two decades a new Milgauss was introduced as the model number 116400.
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A single vessel, submarine K-27, was built as project 645 to use a pair of liquid metal-cooled VT-1 reactors. K-27 was launched on 1 April 1962 and had some additional differences from Novembers: cone-shaped hull head, new antimagnetic strong steel alloys, somewhat different configuration of compartments, and a rapid loading mechanism for each torpedo tube. A liquid metal-cooled reactor had better efficiency than the water-cooled VM-A reactor, but technical maintenance of liquid metal cooled reactors in naval base was much more complicated.
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Guillaume is known for his discovery of nickel-steel alloys he named invar and elinvar. Invar has a near-zero coefficient of thermal expansion, making it useful in constructing precision instruments whose dimensions need to remain constant in spite of varying temperature. Elinvar has a near-zero thermal coefficient of the modulus of elasticity, making it useful in constructing instruments with springs that need to be unaffected by varying temperature, such as the marine chronometer. Elinvar is also non-magnetic, which is a secondary useful property for antimagnetic watches.
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Normal surface air filled watch cases and crystals designed for extreme depths must be large to cope with the water pressure. The Rolex Sea-Dweller deepsea watch case has a diameter of mm and a thickness of (domed crystal thickness ), and the case and bracelet weigh .The deep dive watch The Rolex DEEPSEA brochure Other features which came with the Deepsea at 2008 was the "Ringlock System" for sealing the sapphire crystal to the case, a caseback made of titanium/steel alloy, the "Glidelock-clasp" and diver extension link, "maxi- dial", engraved rehaut, ceramic bezel with platinum-filled numbers, calibre 3135 with antimagnetic Parachrome-Blue-hairspring and blue "Chromalight" loom. The first variant of Sea-Dweller Deepsea reference 116660 has a classic black dial with white text on the dial.
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