ROLEX Oyster Perpetual Milgauss New Version with 904L Steel Case and Electric Blue Dial, Ref. 116400GV-0002

Rolex is presenting a new version of the Oyster Perpetual Milgauss watch with unique and symbolic aesthetics.

Its green sapphire crystal marked a first in watchmaking when it was introduced on the Milgauss in 2007. Now this crystal is combined with an electric blue dial, an allusion to the emblematic lightning-bolt shaped seconds hand and the watch’s technical purpose as a paramagnetic timepiece designed for engineers and scientists in the 1950s, a golden age of scientific research.

Seen through the green sapphire crystal, the Z blue dial – a name derived from its zirconium content – takes on a powerfully attractive magnetic hue.

The Milgauss watch was created in 1956 for engineers and technicians who are exposed in their work to magnetic fields which disrupt the performance of mechanical watches. It was designed to resist strong interference of up to 1,000 gauss, hence its name – “mille” being French for thousand – while maintaining its performance and precision as an officially certified chronometer.

A pioneer in magnetic resistance, it became known as the watch worn by scientists at the European Organization for Nuclear Research (CERN) in Geneva and gained a reputation as the ultimate watch of science and technological progress. Several innovations contribute to its resistance to magnetism.

The first line of defence is a shield made of ferromagnetic alloys that surrounds the movement within the Oyster case, an invention patented by Rolex in 1954. The second line of defence involves two of the movement’s key components, the oscillator and the escapement, which are made of innovative paramagnetic materials developed by Rolex since the 2000s.

The 40 mm Oyster case is guaranteed waterproof to a depth of 100 metres (330 feet). The characteristically shaped middle case of Rolex 116400GV-0002 Milgauss watch is crafted from a solid block of particularly corrosion-resistant 904L steel.

The fluted case back is hermetically screwed down with a special tool exclusive to Rolex watchmakers. The winding crown, fitted with the patented Twinlock double water-proofness system, screws down securely against the case. The crystal is made of virtually scratchproof green sapphire. The waterproof Oyster case provides optimal protection for the Milgauss’s high precision movement.

The Rolex Milgauss reference 116400GV-0002 is equipped with the Calibre 3131 self-winding mechanical movement entirely developed and manufactured in-house.

Like all Rolex Perpetual movements, the 3131 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. It includes Rolex-patented components to guarantee the level of resistance to magnetic interference for which it is named.

The escapement of the Milgauss watch features a paramagnetic escape wheel made of a nickel-phosphorus alloy. This component is produced using a micro-manufacturing technology (UV-LiGA) that is entirely mastered in-house.

The oscillator has a blue Parachrom hairspring patented and manufactured by Rolex in an exclusive alloy of niobium and zirconium. Insensitive to magnetic fields, the Parachrom hairspring offers great stability when exposed to temperature variations and remains up to 10 times more precise than a traditional hairspring in case of shocks.

The Oyster bracelet of the Oyster Perpetual Milgauss is very secure and comfortable to wear. It is equipped with a folding Oysterclasp, designed by Rolex. It also features the ingenious Rolex-patented Easylink rapid extension system that allows the wearer to easily increase the bracelet length by approximately 5 mm, for additional comfort in any circumstance.

Technical details

Model: Rolex Oyster Perpetual Milgauss (new version with an electric blue dial)
Reference: 116400GV-0002

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Internal magnetic shield to protect the movement
Diameter: 40 mm
904L stainless steel superalloy, polished finish
Case Back: Screw-down with Rolex fluting
Bezel: Smooth
Winding Crown: Screw-down, Twinlock double waterproofness system
Crystal: Scratch-resistant green sapphire
Water-proofness: 100 metres (330 feet)

Movement
Calibre3131, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Officially certified Swiss chronometer (COSC)
Frequency: 28,800 beats/hour (4Hz)
Paramagnetic blue Parachrom hairspring
Breguet overcoil
Large balance wheel with variable inertia
Paramagnetic nickel-phosphorus escape wheel
High-precision regulating via four gold Microstella nuts
Traversing Balance Bridge
Jewelling: 31 rubies
Power Reserve: Approximately 48 hours

Functions 
Centre hour, minute and seconds hands
Stop-seconds for precise time setting

Dial
Colour:  Blue
Hour Markers: Highly legible Chromalight appliques (long-lasting luminescence) in 18 ct white gold
Hands: Chromalight hands in 18 ct white gold, orange lightning bolt-shaped seconds hand

Bracelet
Oyster, three-piece solid links
904L stainless steel super alloy, polished centre links, satin-finished outer links with polished edges
Folding Oysterclasp
Easylink 5 mm comfort extension link

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