How does the Rolex Milgauss resist magnetism?

The Milgauss uses a dual-layer antimagnetic system: (1) A Faraday cage, a soft iron inner case that surrounds the movement and deflects magnetic fields away from the delicate balance wheel and hairspring. (2) The Cal. 3131 movement itself incorporates paramagnetic materials, including a blue Parachrom hairspring (made from niobium and zirconium) and a nickel-phosphorus escapement wheel, both of which are inherently resistant to magnetic interference. This dual approach achieves resistance up to 1,000 gauss.

Why doesn't the Rolex Milgauss have a date window?

Rolex intentionally omitted the date function from the Milgauss for both technical and design reasons. The date aperture in the dial creates an additional potential entry point for magnetic interference into the Faraday cage shielding system. Additionally, the clean, symmetrical dial without a date window is part of the Milgauss's distinctive design identity: along with the lightning bolt hand and green crystal, the dateless dial sets it apart from almost every other modern Rolex.

How often should a Rolex Milgauss be serviced?

Rolex recommends servicing the Milgauss every 10 years under normal conditions. A full Rolex service for the Cal. 3131 costs approximately $800-$1,200 and includes movement overhaul, gasket replacement, water resistance testing, and case/bracelet refinishing if requested. The Faraday cage and anti-magnetic shield are inspected and replaced if necessary. Always use Rolex-authorized service centers to maintain value and warranty coverage.

What is the difference between Milgauss 116400 and 116400GV?

The key difference is the crystal: the 116400 has a standard clear sapphire crystal, while the 116400GV features Rolex's unique green-tinted sapphire crystal (Glace Verte). Both share the same 40mm Oystersteel case, Cal. 3131 movement, lightning bolt seconds hand, and 1,000-gauss antimagnetic protection. The GV is available in black and Z-Blue (electric blue) dials, while the standard 116400 was offered in black and white. The GV commands a $2,000-$5,000 premium on the secondary market due to the crystal's uniqueness.

Will Rolex bring back the Milgauss?

As of 2025, Rolex has made no announcement regarding a Milgauss successor. Industry speculation ranges from a permanent discontinuation to a future relaunch with updated specifications (perhaps an in-house movement with greater antimagnetic resistance to compete with Omega's 15,000-gauss standard). Until any official announcement, the existing Milgauss references represent a closed chapter, which is precisely what drives their collectibility.

Who wore the Rolex Milgauss?

The Milgauss has attracted a diverse celebrity following including Jennifer Aniston (custom blacked-out version), Jeff Goldblum, Justin Timberlake (Z-Blue), Daniel Craig, Conan O'Brien, Tom Hanks, Eric Clapton, Anthony Kiedis, Jake Gyllenhaal, Usher, Will Ferrell, and Sylvester Stallone. Its original clientele was scientists at CERN, and it continues to appeal to intellectuals and professionals who want a Rolex that signals substance over status.

Why was the Rolex Milgauss discontinued?

Rolex quietly removed the Milgauss from its catalog in 2023 without official explanation. Industry speculation suggests several factors: the Milgauss was a relatively low-volume seller compared to the Submariner or GMT-Master II; the Cal. 3131 movement was aging and would have required a costly redesign; and Rolex may be consolidating its lineup. No successor has been announced. The discontinuation immediately increased secondary market prices, with Z-Blue models jumping from around $9,000 to $12,000-$15,000.

How much is a Rolex Milgauss worth in 2025?

As of 2025, Rolex Milgauss prices on the secondary market range from $8,000 to $15,000+ depending on the variant. The clear-crystal Ref. 116400 trades between $8,000-$11,000. The green-crystal black-dial Ref. 116400GV ranges from $9,500-$12,000. The most sought-after Z-Blue dial 116400GV commands $11,000-$15,000+. Vintage Ref. 1019 models start around $25,000, and the rare original Ref. 6541 commands $100,000-$300,000+ at auction.

What is so special about the Rolex Milgauss green crystal?

The Milgauss GV's green sapphire crystal (Glace Verte) is unique in all of watchmaking. Unlike colored crystals in other watches that use coatings, Rolex engineered a sapphire crystal that is tinted green throughout its entire structure. The manufacturing process is so complex and difficult to replicate that Rolex chose not to patent it, the difficulty of production serves as its own protection. No other watch brand has successfully produced a comparable green sapphire crystal, making it one of the most distinctive visual elements in horology.

Is the Rolex Milgauss a good investment?

The Milgauss has become an increasingly attractive investment since its 2023 discontinuation. The Z-Blue variant has appreciated approximately 30-60% from its last retail MSRP of $9,300, trading at $11,000-$15,000 in 2025. With no successor model announced and supply permanently fixed, the trajectory mirrors other discontinued Rolex models like the Submariner Hulk. However, investment performance varies by variant, the clear-crystal 116400 models have appreciated more modestly. For best investment potential, focus on complete sets with original box, papers, and warranty card.

What does Milgauss mean?

Milgauss is a portmanteau of 'mille' (French for 'thousand') and 'gauss' (the unit of magnetic field strength). The name directly communicates the watch's defining capability: resistance to magnetic fields of up to 1,000 gauss. This was a revolutionary achievement when the watch debuted in 1956, as most mechanical watches could only withstand 50-100 gauss before their timekeeping was compromised.

Can I still buy a new Rolex Milgauss?

No. The Rolex Milgauss was discontinued in 2023 and is no longer available at authorized Rolex dealers. The only way to acquire one is through the pre-owned market. Reputable pre-owned dealers like Ultimate Diamond on NYC's 47th Street offer authenticated Milgauss models with guarantees. New-old-stock (NOS) unworn examples occasionally surface but command significant premiums over standard pre-owned pricing.

Rolex Milgauss vs Omega Aqua Terra, which has better antimagnetic protection?

The Omega Aqua Terra with Master Chronometer certification offers significantly superior antimagnetic resistance at 15,000 gauss versus the Milgauss's 1,000 gauss. However, the technologies differ fundamentally: Omega uses non-ferromagnetic movement components throughout, while Rolex employs a Faraday cage (soft iron shield) plus paramagnetic materials. The Omega approach allows for a transparent caseback, while the Milgauss requires a solid back. In practical terms, both exceed the antimagnetic needs of any normal environment, the Milgauss's 1,000 gauss rating was designed for CERN particle accelerators.

Where can I buy a Rolex Milgauss in NYC?

Since the Milgauss is discontinued, you won't find it at authorized Rolex retailers. The best option in New York City is the 47th Street Diamond District, home to Ultimate Diamond, a family-owned watch dealer in business since 1959 with over 13,000 watches. They specialize in sourcing discontinued Rolex references with full authentication. Other reputable NYC pre-owned dealers include Bob's Watches (online with NYC presence) and established Diamond District dealers with Rolex expertise.

Milgauss

Rolex Milgauss: The Complete Collector's Encyclopedia

The Rolex Milgauss was introduced in 1956 to serve scientists and engineers working in environments with strong magnetic fields, its name derived from "mille" (thousand) and "gauss," the unit of magnetic flux density. The watch resists magnetic fields up to 1,000 gauss through a Faraday cage of soft iron shielding the movement. After a discontinuation gap from 1988 to 2007, Rolex revived the Milgauss with the Ref. 116400 series, introducing the distinctive green-tinted sapphire crystal (Glace Verte) on the 116400GV and the lightning bolt seconds hand, the only playful design element in the entire Rolex catalog. The Cal. 3131, shared with the Air-King 116900, incorporated a blue Parachrom hairspring and nickel-phosphorus escapement for additional antimagnetic protection. Rolex discontinued the entire Milgauss collection in 2023, making it exclusively a pre-owned proposition. The Z-Blue dial on green crystal has become the defining configuration, trading between $11,000 and $16,000 as collector recognition of its unique position within the Rolex lineup continues to grow.

Last updated: 2025-04-01

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Specifications

Reference116400GV

NicknameZ-Blue / Green Crystal Milgauss

Diameter40mm

Thickness13.2mm

Lug-to-Lug48.6mm

Lug Width20mm

Case MaterialOystersteel (904L stainless steel)

MovementCalibre 3131 (self-winding, in-house)

Frequency28,800 vph (4 Hz)

Power ReserveApproximately 48 hours

Water Resistance100 meters / 330 feet

BezelFixed smooth polished Oystersteel

CrystalGreen-tinted sapphire (Glace Verte): unique to the Milgauss

BraceletOyster, three-piece solid links with Oysterclasp and Easylink 5mm comfort extension

LumeOrange luminescent hour markers (Chromalight)

DateNo

CertificationSuperlative Chronometer (COSC + Rolex after-casing, ±2 sec/day)

Year Introduced2007

History

The Rolex Milgauss was conceived in the early 1950s when scientists at CERN (the European Organization for Nuclear Research) in Geneva approached Rolex with a challenge: their precision mechanical watches were failing in the powerful electromagnetic fields generated by particle accelerators. Rolex's answer, unveiled in 1956, was a watch encased in a Faraday cage, a soft iron shield that deflected magnetic interference away from the movement. The result could resist fields up to 1,000 gauss, a staggering achievement when most mechanical watches faltered at 50-100 gauss. CERN engineers tested the prototype and reportedly called it 'the perfect magnetic shield.'

Iconic References

Buying Guide

• Scientists, engineers, and academics who identify with its CERN heritage
• Collectors who want a distinctly different Rolex from the Submariner/Daytona mainstream
• Anyone who works around magnetic fields (MRI technicians, electrical engineers, lab researchers)
• Watch enthusiasts who appreciate unique technical solutions (Faraday cage, green sapphire)
• The buyer who wants a conversation-starting Rolex that signals intellectual depth
• Investors seeking a recently discontinued Rolex with rising secondary market trajectory

Pricing & Market Data

Retail MSRP

116400GV ZBlue$9,300 (last MSRP before 2023 discontinuation)

116400GV Black$9,300 (last MSRP before discontinuation)

116400 Black$8,350 (last MSRP before phase-out ~2016)

116400 White$8,350 (last MSRP before phase-out ~2016)

Pre-Owned Market

116400GV ZBlue$11,000-$15,000+ (2025)

116400GV Black$9,500-$12,000 (2025)

116400 Black$8,000-$11,000 (2025)

116400 White$8,000-$11,000 (2025)

1019 Vintage$25,000-$80,000 (2025, condition dependent)

6541 Vintage$100,000-$300,000+ (2025, rarity and condition dependent)

Market Trajectory

The Milgauss is on a clear upward trajectory since its 2023 discontinuation. Unlike the speculative bubble of 2022, this price movement is driven by genuine scarcity: Rolex has given no indication of a successor model. The Z-Blue variant is leading the charge, with black-dial GV and clear-crystal 116400 models following. Vintage references (1019, 6541) continue their independent appreciation cycle driven by the broader vintage Rolex collecting boom.

Investment Grade

A-tier for Z-Blue 116400GV (strong demand, fixed supply, iconic design). B+ tier for black-dial GV and clear-crystal 116400 (benefits from halo effect but less collector heat). S-tier for vintage 6541 and early 1019 examples (proven long-term appreciation, extreme rarity).

Best Value Pick

The Ref. 116400 with clear crystal and black dial offers the best entry point into the Milgauss world at $8,000-$10,000. You get the same Cal. 3131, the same lightning bolt hand, and the same Faraday cage as the pricier GV models: just without the green sapphire crystal. For those who prefer the GV, the black-dial version at $9,500-$11,500 is better value than the Z-Blue at $11,000-$15,000, with equivalent build quality and potential for the price gap to narrow.

Comparisons

Cultural Significance

Jennifer Aniston

Custom blacked-out Milgauss

One of the most high-profile Milgauss wearers. Aniston has been photographed repeatedly wearing a custom blacked-out Milgauss, helping cement its status as the 'anti-Datejust' celebrity watch choice.

Jeff Goldblum

Milgauss 116400GV

The actor known for his eccentric style is a perfect match for the Milgauss's quirky personality. Often spotted wearing the GV variant.

Justin Timberlake

Milgauss 116400GV Z-Blue

Frequently photographed with the Z-Blue dial variant, bringing mainstream visibility to the reference.

Daniel Craig

Milgauss 116400GV

The James Bond actor chose a Milgauss for personal wear, an interesting choice given Bond's association with other Rolex models and Omega.

Conan O'Brien

Milgauss 116400GV

The comedian and talk show host is a known Milgauss wearer, fitting the watch's intellectual, slightly offbeat personality.

Tom Hanks

Milgauss

One of Hollywood's most respected actors has been spotted wearing a Milgauss, reinforcing its association with intelligence and substance over flash.

Eric Clapton

Milgauss

The legendary guitarist and known watch collector included a Milgauss in his collection, which has been featured in collector circles.

Frequently Asked Questions

Reference Guides

Deep dives on the specific Rolex Milgauss references, with current market value and buying notes.

Ref. 116400GV

Milgauss 116400GV

Milgauss Green Crystal (GV = Glace Verte); the Z-Blue when fitted with the electric-blue dial

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