Rolex Oyster Perpetual Milgauss 904L Steel (reference 116400)

Rolex Oyster Perpetual Milgauss is a new-generation watch designed to resist intense magnetic fields and is the proud heir of the original Milgauss born in the 1950s in the spirit of science. The Oyster Perpetual Milgauss derives its name from the French word for «1000» and the term «gauss», the magnetic field unit. As the French name indicates, the Milgauss watch is resistant to a magnetic flux density of 1,000 gauss.

Introduced in 2007, the new generation Milgauss watch in 904L steel has the reference number 116400. It features a 40mm diameter case and houses the COSC certified Rolex Calibre 3131.

Rolex Oyster Perpetual Milgauss 904L Steel (reference 116400)Working together, the movement and the magnetic shield allow the watch to achieve exceptional performance when subjected to intense magnetic fields. The movement benefits from various innovations that reinforce its resistance to magnetic interference.

– It is equipped with a PARACHROM® hairspring developed and manufactured by Rolex.
– The escapement is equipped with an escape wheel made from a new paramagnetic material.

The magnetic shield protects the movement. Manufactured in ferromagnetic alloys selected by Rolex, it consists of two components screwed to the inside of the famous Oyster case that ensures the waterproofness of the watch.

Self-winding, equipped with a Perpetual rotor and certified by the Swiss Official Chronometer Testing Institute (COSC), the Oyster Perpetual Milgauss is guaranteed waterproof to a depth of 100 metres (330 feet).

Available in 904L steel on an Oyster bracelet with an Oysterclasp and an Easylink comfort extension link, it features a luminescent orange seconds hand in the shape of a lightning bolt. Two dial colors are available: black or white.

The Milgauss anniversary version  (reference 116400 GV 001) has an intense black dial and a green sapphire crystal.

Technical details

Model: Rolex Oyster Perpetual Milgauss 904L Steel (reference 116400)

  • Calibre: 3131
  • Self-winding: Perpetual rotor
  • Power reserve: 48 hours
  • Oscillator Frequency: 4 Hz (28,800 beats/hour), Parachrom hairspring with a Breguet overcoil
  • Chronometer: COSC certification
  • Diameter: 40 mm
  • Materials: 904L steel
  • Waterproofness: 100 m (330 ft)
  • Winding crown: Twinlock
  • Crystal: Sapphire (coloured green for the anniversary version)
  • Bracelet: Oyster with Oysterclasp and Easylink comfort extension link

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