Replica Rolex Sea-Dweller 4000

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Replica Rolex Sea-Dweller 4000

  • CASE MATERIAL:904L Steel
  • BEZEL :Rotating Steel with Black Ceramic Insert
  • GLASS :Sapphire
  • DIAL :Black
  • MOVEMENT :Miyota 8215 Automatic Power Reserve: 48 Hours
  • FUNCTIONS :Central Hours, Minutes and Seconds Date by Window
£220     = British Pound Sterling
$279.4 = United States Dollar
261.8 = The Euro

History of Rolex Sea-Dweller 4000

When it comes to luxury wristwatches, Rolex is a name that stands head and shoulders above the rest. Among their illustrious lineup of timepieces, the Rolex Sea-Dweller 4000 holds a special place. This iconic dive watch has been a favorite among professional divers and watch enthusiasts for decades, and its history and features make it a true legend in the world of horology.

A Dive Watch with a Rich History

The Rolex Sea-Dweller 4000 is part of the larger Rolex Oyster Perpetual collection, which has been synonymous with excellence and innovation in watchmaking since its inception. The Sea-Dweller, however, has its own unique story that sets it apart.

The roots of the Sea-Dweller can be traced back to the 1960s when Rolex began collaborating with COMEX (Compagnie Maritime d'Expertises), a French company specializing in underwater engineering and deep-sea diving. COMEX divers needed a timepiece that could withstand the extreme pressures of deep-sea exploration, and Rolex was more than up to the challenge.

In 1967, Rolex introduced the very first Sea-Dweller, the Ref. 1665, with a depth rating of 610 meters (2,000 feet). This groundbreaking watch featured the helium escape valve (HEV), which allowed helium gas to escape from the watch during decompression, preventing the crystal from popping off during resurfacing. This innovation was crucial for saturation divers who spent extended periods in helium-rich environments

Over the years, the Sea-Dweller evolved, and in 1978, the Rolex Sea-Dweller 4000 was born. With a depth rating of 1,220 meters (4,000 feet), it was designed to meet the demands of professional saturation divers working at extreme depths. The Sea-Dweller 4000 became a trusty companion for these adventurers, a tool they could rely on in the harshest conditions.

Design and Features

The Rolex Sea-Dweller 4000 boasts a classic and instantly recognizable design. Its case is crafted from Rolex's signature 904L stainless steel, known for its exceptional corrosion resistance. The watch features a 40mm case size, which strikes a perfect balance between being substantial enough for professional use and comfortable for everyday wear.

One of the standout features of the Sea-Dweller 4000 is its unidirectional rotating bezel. The black ceramic bezel insert is equipped with a luminescent pip, and its precision allows divers to time their dives accurately, preventing the risk of decompression sickness.

The dial of the Sea-Dweller 4000 is a model of legibility. Its large, lumed hour markers and Mercedes hands ensure that time can be easily read even in low-light or murky underwater conditions. The date window at 3 o'clock is magnified by Rolex's signature Cyclops lens, enhancing readability further

Inside the Sea-Dweller 4000 ticks Rolex's legendary Caliber 3135, a self-winding mechanical movement known for its reliability and precision. With a power reserve of approximately 48 hours, it keeps ticking through extended dives and daily wear without missing a beat.

The Helium Escape Valve (HEV)

One of the defining features of the Rolex Sea-Dweller series is the Helium Escape Valve (HEV). While most divers won't need to worry about this feature, it's a critical component for saturation divers who spend extended periods in high-pressure environments.

The HEV, positioned at 9 o'clock on the case, allows helium molecules that may have penetrated the watch during a deep-sea mission to safely escape during decompression without damaging the watch. This innovation was a game-changer for professional saturation divers and cemented Rolex's reputation for engineering excellence.

Evolution and Legacy

The Rolex Sea-Dweller 4000, with its impressive depth rating and rugged design, continued to be a favorite among professional divers and watch enthusiasts alike for many years. However, in 2017, Rolex introduced a successor, the Sea-Dweller 126600, with a 43mm case size and an increased depth rating of 1,220 meters (4,000 feet). This model also featured a red "Sea-Dweller" text on the dial, paying homage to the original Sea-Dweller from the 1960s.

While the Sea-Dweller 4000 may no longer be in production, it remains a coveted timepiece for collectors and those who appreciate its rich history and robust capabilities. Its legacy lives on in the newer Sea-Dweller models, ensuring that the spirit of adventure and innovation that inspired its creation continues to define Rolex's dive watch offerings.

In conclusion, the Rolex Sea-Dweller 4000 is a watch that epitomizes Rolex's commitment to excellence, innovation, and durability. With a history rooted in deep-sea exploration, a design that balances form and function, and features like the Helium Escape Valve that cater to the needs of professional divers, it has rightfully earned its place as a legend in the world of luxury dive watches. Whether you're a seasoned diver or simply appreciate the craftsmanship of a well-made timepiece, the Sea-Dweller 4000 is a true icon that deserves recognition and admiration.

Rolex Sea-Dweller 4000: A Deep Dive into Technical Excellence

Rolex, the Swiss luxury watchmaker renowned for its precision, craftsmanship, and innovation, has consistently pushed the boundaries of watchmaking. The Rolex Sea-Dweller 4000 is no exception to this tradition, representing the pinnacle of dive watch technology and engineering. In this comprehensive article, we delve deep into the technical data of the Rolex Sea-Dweller 4000, exploring its design, specifications, and the features that make it a coveted timepiece among professional divers and watch enthusiasts worldwide.

Case and Materials

The Rolex Sea-Dweller 4000 features a robust and corrosion-resistant stainless steel case. Rolex's proprietary Oystersteel, a high-quality stainless steel alloy, is used for its construction. This material is not only exceptionally durable but also resistant to corrosion, ensuring that the watch can withstand the corrosive effects of saltwater during deep-sea dives

The case measures 40mm in diameter, striking a perfect balance between modern sizing and the classic aesthetics that Rolex is known for. Its thickness of 15mm gives it a substantial presence on the wrist without being overly bulky.

Water Resistance

One of the standout features of the Rolex Sea-Dweller 4000 is its exceptional water resistance. Designed to meet the demands of professional saturation divers, this timepiece is water-resistant to an impressive depth of 1,220 meters (4,000 feet). This remarkable capability is made possible by Rolex's patented Triplock winding crown, which screws down securely against the case, forming an impenetrable seal.

Helium Escape Valve

A critical component for saturation divers is the helium escape valve, and the Rolex Sea-Dweller 4000 incorporates a helium escape valve into its design. Saturation divers spend extended periods in high-pressure environments, such as underwater habitats or diving bells. During these missions, helium molecules can penetrate the watch's case due to their small size. The helium escape valve allows built-up helium to be safely released from the watch during decompression, preventing damage to the crystal or case.

Bezel and Dial

The watch's unidirectional rotatable bezel is fitted with a black Cerachrom insert, Rolex's proprietary ceramic material. This material is not only scratch-resistant but also highly resistant to fading caused by UV rays and corrosion. The bezel features a 60-minute graduated scale, which is essential for timing dives accurately

The dial of the Rolex Sea-Dweller 4000 is a model of readability and functionality. It features large, highly legible hour markers and hands filled with Chromalight luminescent material, which emits a long-lasting blue glow in low-light conditions. The date window is equipped with a Cyclops lens, magnifying the date for enhanced readability.


At the heart of the Rolex Sea-Dweller 4000 is the Rolex Caliber 3135, a self-winding mechanical movement renowned for its precision and reliability. The movement is equipped with a Parachrom hairspring, which is resistant to shocks and magnetic fields, ensuring accurate timekeeping even in challenging conditions. It also boasts a power reserve of approximately 48 hours.

Bracelet and Clasp

The watch is secured to the wrist with Rolex's iconic Oyster bracelet, crafted from Oystersteel. The bracelet is not only comfortable but also includes Rolex's patented Glidelock extension system, allowing for easy adjustment of the bracelet's length without the need for tools. This feature is particularly useful for divers who wear their watches over a wetsuit. The Oysterlock safety clasp provides an additional layer of security, ensuring that the watch stays firmly in place during dives.


In conclusion, the Rolex Sea-Dweller 4000 is a masterpiece of watchmaking that combines technical excellence with timeless aesthetics. Its superior water resistance, helium escape valve, and robust construction make it a top choice for professional divers and adventure enthusiasts. Yet, it's equally suitable for everyday wear, thanks to its classic design and unmatched craftsmanship. The Rolex Sea-Dweller 4000 exemplifies Rolex's commitment to pushing the boundaries of what a dive watch can achieve, making it a coveted timepiece in the world of horology.