Exploring the IWC Aquatimer Perpetual Calendar Digital Date-Month

A Horological Masterpiece Meant For The Depths

Words by: Hourstriker Staff
December 19, 2023
In the world of horology, few names command the same level of respect and admiration as IWC Schaffhausen. With a rich history spanning over a century, IWC has consistently delivered timepieces that are not just instruments for measuring time but true works of art. Today, we embark on a journey to discover one of their latest masterpieces—the IWC Aquatimer Perpetual Calendar Digital Date-Month.

To truly appreciate the Aquatimer Perpetual Calendar Digital Date-Month, we must first delve into the illustrious history of IWC Schaffhausen. Established in 1868 by American watchmaker Florentine Ariosto Jones, IWC combined Swiss craftsmanship with American engineering to create a brand that would stand the test of time.

Courtesy of IWC


Throughout its history, IWC has been at the forefront of horological innovation. In 1885, the brand introduced the Pallweber pocket watch, which featured a digital display for hours and minutes—an early example of innovative timekeeping. Fast forward to 1936, and IWC unveiled the Special Pilot's Watch, a legendary timepiece that set the standard for pilot watches and cemented the brand's reputation for precision and durability.

The Aquatimer collection, part of IWC's storied lineage, represents the brand's commitment to creating exceptional diving watches. Designed for both professional divers and enthusiasts who appreciate the call of the deep, the Aquatimer series is synonymous with durability, functionality, and, of course, style.

IWC's dedication to diving watches dates back to the 1960s when the brand introduced its first water-resistant watch, the Aquatimer Ref. 812AD. Over the years, the collection has evolved, incorporating cutting-edge technology and innovative materials to meet the demands of modern divers. Whether you're exploring the ocean's depths or simply appreciating the aesthetics of a well-crafted timepiece, the Aquatimer collection has something to offer.

In December 2023, IWC Schaffhausen made headlines with a unique collaboration. Partnering with Warner Bros. Pictures' highly-anticipated film, "Aquaman and the Lost Kingdom," IWC drew inspiration from the underwater world of the film to create the Aquatimer Perpetual Calendar Digital Date-Month.

Courtesy of IWC


This collaboration is not merely a marketing stunt but a testament to IWC's dedication to craftsmanship and storytelling. In the film, the characters Black Manta, played by Yahya Abdul-Mateen II, and Dr. Stephen Shin, portrayed by Randall Park, wear prop watches supplied by IWC. These watches, designed to glow brightly in either red or blue, became the muse for two striking limited editions in the Aquatimer collection.

The Aquatimer Perpetual Calendar Digital Date-Month is a true embodiment of the brand's commitment to merging horology with the world of cinema. It reflects the attention to detail that defines both watchmaking and cinematography, making it a timepiece that transcends traditional boundaries.

The Aquatimer Perpetual Calendar Digital Date-Month is available in two captivating versions, both exuding an aura of sophistication and functionality. Both variants feature black dials, black hands, and imposing 49-millimeter Ceratanium® cases—a material that combines the lightweight properties of titanium with the hardness and scratch resistance of ceramic.

The first variant, bearing the reference number IW379405, pays homage to the glowing red prop watches from the film. It features red Super-LumiNova® on the dial, the hands, and the inner rotating bezel—a striking combination that not only enhances legibility but also adds a touch of boldness to the timepiece.

On the other hand, the second variant, with reference number IW379406, draws inspiration from the blue glowing prop watches. Its blue Super-LumiNova® elements on the dial, hands, and inner rotating bezel exude an air of tranquility and depth reminiscent of the ocean's depths.

The Super-LumiNova® used in these Aquatimer watches is a high-tech ceramic compound infused with luminous pigments. It's not just your ordinary luminous material; it's a powerhouse of illumination that behaves like a light storage battery, thanks to a phenomenon called phosphorescence.

Courtesy of IWC


When exposed to sunlight or artificial light, Super-LumiNova® absorbs energy, causing the electrons within the material to enter a higher energy state where this energy is stored. As the electrons return to their normal state, they emit the absorbed energy as visible light, creating a captivating glow in the dark or underwater. This innovative material ensures that your Aquatimer Perpetual Calendar Digital Date-Month remains visible even in the darkest depths of the ocean.

One of the most remarkable aspects of the Aquatimer Perpetual Calendar Digital Date-Month is its Ceratanium® case. This patented material, developed by IWC, blends the best of both worlds—combining the lightweight properties of titanium with the hardness and scratch resistance of ceramic.

The process of crafting Ceratanium® involves machining the case components from special titanium alloy bars, followed by meticulous hand finishing. These components are then fired at extremely high temperatures in a kiln, where they undergo heat treatment that imbues the material with ceramic-like properties, including its characteristic color.

The result is a case that not only boasts remarkable durability but also showcases the perfect blend of innovation and craftsmanship—a hallmark of IWC's approach to watchmaking.

At the core of the Aquatimer Perpetual Calendar Digital Date-Month lies the IWC-manufactured 89802 caliber—a movement that exemplifies precision, innovation, and functionality. This impressive mechanical engine powers the perpetual calendar and chronograph functions, making it a true horological masterpiece.

Courtesy of IWC


One of the standout features of this movement is its perpetual calendar, which boasts digital displays for both the date and month. Unlike traditional date windows or subdials, the Aquatimer's perpetual calendar relies on rotating discs to present this information in a digital format on the dial. This not only enhances legibility but also adds a futuristic touch to the watch's overall aesthetic.

The perpetual calendar is more than just a visual marvel; it's a mechanical marvel as well. Programmed to automatically recognize variations in month lengths and leap years, it ensures that the watch always displays the correct date, even during leap years. This intricate mechanism, which requires no manual adjustment for the majority of its life, is a testament to IWC's commitment to innovation and precision.

In addition to its perpetual calendar, the Aquatimer Perpetual Calendar Digital Date-Month houses a sophisticated chronograph function. This feature allows wearers to measure elapsed time with precision, making it a valuable tool for divers and adventurers alike.

The chronograph function displays the stopped hours and minutes in a totalizer at the 12 o'clock position. This design not only adds to the watch's readability but also enhances its aesthetic appeal. Whether you're timing a dive or simply recording an event, the Aquatimer Perpetual Calendar Digital Date-Month ensures that you can do so with ease and accuracy.

One of the most impressive aspects of the IWC 89802 caliber is its efficient energy management. This movement features a double pawl winding system, which efficiently converts the movements of the oscillating mass in both directions into energy for the mainspring.

This innovative system not only ensures the longevity of the watch's power reserve but also enhances the precision of its timekeeping. With a power reserve of 68 hours, the Aquatimer Perpetual Calendar Digital Date-Month can accompany you through days of adventure without missing a beat.

While the front of the Aquatimer Perpetual Calendar Digital Date-Month offers a captivating view of its dial and features, the back tells a different story—one of intricate craftsmanship and technical prowess. The transparent sapphire glass case back allows watch enthusiasts to peer into the heart of the timepiece and admire the inner workings of the IWC 89802 caliber.

Courtesy of IWC


One of the standout elements visible through the case back is the blackened rotor. This technical design, achieved through an elaborate nickel-plating process, adds a touch of sophistication to the movement. It's a subtle yet significant detail that underscores the watch's attention to aesthetics and functionality.

As a member of the Aquatimer collection, the Perpetual Calendar Digital Date-Month is equipped with the IWC SafeDive system. This innovative feature is a testament to the brand's commitment to safety and functionality in diving watches.

The external/internal rotating bezel system, a hallmark of the SafeDive system, allows divers to set the dive time with precision. This is crucial for monitoring oxygen levels and ensuring safe ascent. What sets this system apart is its combination of enhanced legibility, thanks to the inner bezel, and ease of use, owing to the external rotating bezel.

To prevent unintentional changes in dive time, the external bezel can only be rotated counterclockwise. Even if a diver accidentally turns the bezel, it will not prolong the dive time, ensuring the safety of the wearer. This level of attention to detail and functionality is a hallmark of IWC's commitment to creating watches that are not just stylish but also reliable tools for adventurers.

To cater to various styles and preferences, the Aquatimer Perpetual Calendar Digital Date-Month features the IWC bracelet quick-change system. This innovative mechanism allows wearers to easily exchange the black rubber strap for a different option, adapting the watch to their outfit or activity.

The black rubber strap not only complements the watch's aesthetic but also offers comfort and flexibility. Whether you're diving, exploring, or simply going about your daily routine, this strap ensures that your watch remains secure and comfortable on your wrist.

Courtesy of IWC


In the alternate world of "Aquaman and the Lost Kingdom," where reality and fantasy merge seamlessly, the Aquatimer Perpetual Calendar Digital Date-Month finds its place as a beacon of precision and innovation. It's a timepiece that pays tribute to the underwater universe and embodies the spirit of adventure.

The collaboration between IWC and the film is not just a marketing endeavor; it's a celebration of craftsmanship, storytelling, and the attention to detail that defines both watchmaking and cinematography. It's a reminder that in the world of horology, every second counts, and every detail matters.
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