Introduction

The Rolex Oyster Perpetual Milgauss 116400-BLKSDO is a distinguished watch originally introduced in 1956, designed for professionals exposed to magnetic fields, such as scientists. Renowned for its unique lightning bolt seconds hand and exceptional antimagnetic properties, it withstands magnetic fields up to 1,000 gauss. This iconic timepiece is priced at $11,000.

WEARING THE WATCH FOR THE FIRST TIME

Before being worn for the first time, or if it has stopped, a Rolex watch must be wound manually in order to function correctly and precisely. 
To wind the watch manually, unscrew the winding crown completely, then turn it several times clockwise. (Turning in the other direction has no effect.) A minimum of 25 turns is required for adequate partial winding. The watch will then be wound automatically as long as it is worn on the wrist. Carefully screw the crown back down against the case to ensure waterproofness.

The green seal accompanying your Rolex watch is a symbol of its status as a Superlative Chronometer. This exclusive designation attests that it has successfully undergone a series of specific final controls by Rolex in its own laboratories in addition to the official COSC certification of its movement. This unique testing of its chronometric precision, waterproofness, self-winding, and reliability pushes back the boundaries of performance and makes Rolex a benchmark for excellence in mechanical watches. For further information, please visit https://rolex.com 

Detailed Specifications

The Milgauss features a 40mm Oyster case, available in stainless steel or 18k white gold, with a scratch-resistant sapphire crystal and a solid case back. The watch is waterproof up to 100 meters (330 feet) and features the Rolex Oyster Perpetual movement, which is a self-winding mechanical movement with a power reserve of approximately 48 hours. The Milgauss is also equipped with a Parachrom hairspring, which is highly resistant to magnetic interference.

THE HEART OF THE MILGAUSS MODEL

OYSTER PERPETUAL MILGAUSS

The Oyster Perpetual Milgauss, the watch par excellence of technological and scientific progress, reconciles strong magnetic fields and chronometric precision. 

It was created in 1956 for engineers and technicians who are exposed in their work to magnetic fields which disrupt the performance of mechanical watches. The Oyster Perpetual Milgauss was designed to resist strong interference of up to 1,000 gauss, hence its name, while maintaining excellent chronometric performance.

Aesthetically, the Oyster Perpetual Milgauss stands out with its orange second hand shaped like a lightning bolt, which was inspired by the original model. Its 40 mm Oyster case, waterproof to a depth of 100 meters (330 feet), is a paragon of robustness. Its dial offers exceptional legibility thanks to the Chromalight hour markers and hands filled with a luminescent material emitting a long-lasting blue glow when in darkness. Its sapphire crystal is virtually scratchproof. 

The Oyster Perpetual Milgauss is equipped with a self-winding mechanical movement entirely manufactured by Rolex. It features an Oyster bracelet with an Oysterclasp and the Easylink comfort extension link.

Description

The Rolex Oyster Perpetual Milgauss 116400-BLKSDO is a watch that combines functionality with style. The watch features a distinctive lightning-bolt-shaped seconds hand and a black or white dial with Arabic numerals. The dial is protected by a scratch-resistant sapphire crystal, and the case is made of stainless steel or 18k white gold. The Milgauss is available in several variations, including the Z-Blue dial with a blue bezel and the black dial with an orange seconds hand.

USING YOUR WATCH

OVERVIEW

1. Hour hand
2. Minute hand
3. Seconds hand
4. Twinlock winding crown with double waterproofness system

Setup Guide

To set the time on the Rolex 116400-BLKSDO, 

• First, unscrew the crown and pull it out to the first position. 
• Turn the crown to set the hour and minute hands, making sure to keep the minute hand aligned with the minute markers. 
• Once the time is set, push the crown back in and screw it down to ensure water resistance.

SETTING THE WATCH

Screwed-down position (position 0) 
The crown is completely screwed down against the case. When the crown is in this position, the Oyster Perpetual Milgauss is guaranteed waterproof to a depth of 100 meters (330 feet).
Manual winding (position 1)
The crown is unscrewed. To wind the watch manually, turn the crown clockwise; turning in the other direction has no effect. When setting the watch for the first time or after the watch has stopped, complete a minimum of 25 turns for partial winding.

Setting the time (position 2)
The crown is unscrewed and pulled out to the first notch. The second hand is stopped, allowing you to set the time to the precise second. To set the hour and minute, turn the crown in either direction.

Initial winding and set initial winding and setting ting

1. Wind the watch manually (position 1).
2. Set the time (position 2). 

After every use, carefully screw the crown back down against the case to guarantee the waterproofness. Return the crown to position 1 and apply light pressure on it while screwing it down clockwise against the case. The crown should never be unscrewed underwater.

EASYLINK COMFORT EXTENSION LINK

To ensure optimal comfort when wearing your watch in any circumstances, Rolex created the Easylink comfort extension link, which is available on some models. Its exclusive design, which was patented, allows the length of the bracelet to  be adjusted by approximately 5 mm, without the use of tools.

Adjusting from the short position to the long position

Adjusting from the long position to the short position

ROLEX SERVICE 

CARING FOR YOUR ROLEX 

• You can help preserve its lustre by cleaning it occasionally with a microfibre cloth. You can also wash the case and bracelet from time to time using soapy water and a soft brush. After wearing your watch in the sea, it is important to rinse it with fresh water to remove any salt and sand deposits.
• Before cleaning your watch, always ensure that the crown is screwed down properly against the case to guarantee waterproofness.

AFTER-SALES SERVICE

Rolex watch servicing ensures that your timepiece will continue to perform optimally and meet Rolex’s stringent requirements in terms of precision, reliability, and waterproofness throughout its life.

The timekeeping accuracy of your watch is largely dependent on high-performance lubricants specially developed by Rolex to minimize friction and prevent wear of components. To guarantee continued accuracy and waterproofness, Rolex recommends that you periodically return your watch to an Official Rolex Retailer or Service Centre for professional servicing. When your watch is serviced by a Rolex watchmaker, the watch is completely dismantled and all of its components are cleaned. Each individual component is closely examined and those that  no longer meet Rolex’s functional and aesthetic specifications are replaced with genuine Rolex parts. 

The movement is carefully lubricated and then tested to guarantee its timing accuracy; the case and the metal bracelet are meticulously refinished to restore their lustre. Your Rolex then undergoes a series of rigorous technical tests and checks to guarantee its waterproofness, power reserve and precision.
After a complete Rolex service, your watch is covered by a service guarantee.

WORLDWIDE SERVICE NETWORK

The network of Official Rolex Retailers and Service Centres covers more than 100 countries around the world and draws on the expertise of highly skilled watchmakers, carefully selected and trained by Rolex.

Official Rolex Retailers can advise you on all the technical aspects of your watch’s functions. Whether your bracelet needs sizing or it is time for a complete service, highly qualified Rolex watchmakers are on hand worldwide to meet all of your service needs.

For a list of Official Rolex Retailers and Service Centres, please visit https://rolex.com 
A privileged place to learn more about the functions of your Rolex watch and about the quality, know-how and fundamental values of the brand. Welcome to the world of Rolex.

Troubleshooting

1. If the watch is not running, make sure that the crown is fully screwed down to ensure water resistance.
2. If the watch is still not running, try winding it by turning the crown clockwise for about 40 rotations. 
3. If the watch is running slow or fast, it may need a service by a Rolex-authorized service center.

Pros & Cons

Pros

• Resistant to magnetic interference
• Scratch-resistant sapphire crystal
• Waterproof up to 100 meters
• Available in several variations
• Equipped with Rolex Oyster Perpetual movement

Cons

• Expensive
• Limited availability
• Requires regular maintenance and service

Customer Reviews

The Rolex Oyster Perpetual Milgauss 116400-BLKSDO has received positive reviews from customers who appreciate its functionality and unique design. The watch is often praised for its resistance to magnetic interference, high-quality materials, and accuracy. However, some customers have expressed disappointment with the watch's high price tag and limited availability.