In the ever-evolving landscape of professional dive watches, Citizen continues to push the boundaries of both sustainability and visual artistry. The latest additions to the renowned Promaster series, the Citizen Promaster BN0167-09W and its more compact counterpart, the EO2023-00W Limited Edition, represent a significant leap in "Structural Color" technology. These timepieces are not merely tools for underwater exploration but are wearable tributes to the shifting beauty of the world’s oceans.
The core concept behind these two models is the "shifting hues of the sea." Unlike traditional watch dials that rely on chemical pigments for color, these limited-edition models utilize structural ink technology developed in collaboration with Fujifilm. This process mimics the way butterfly wings or peacock feathers produce color through microscopic structures that reflect light in specific ways. The inspiration is drawn from the dynamic nature of the ocean—from deep, dark blues to vibrant teals and occasional hints of violet. This "pigment-free" approach ensures that the dial is not just a static surface but a living canvas that changes every time you tilt your wrist.
The BN0167-09W is specifically designed for individuals who prefer a watch with a substantial and commanding presence on the wrist. Its design centers around a robust 44mm silver-tone stainless steel case and thickness 11.5 mm that features a refined brushed finish. Following the classic ISO-compliant Promaster silhouette, the watch is equipped with an easy-grip unidirectional dive bezel and a screw-down crown positioned at 4 o'clock to ensure it does not dig into the wearer’s wrist.
The dial serves as the artistic centerpiece, crafted from 100% recycled polycarbonate and showcasing a deep blue gradient that shifts beautifully into turquoise and teal. This multi-layered texture provides an incredible sense of depth that resembles light filtering through water. Finally, the model is fitted with a black BENEBiOL™ strap made from a sustainable, plant-based polyurethane material. This strap is highly resistant to chemicals and environmental wear, offering a more eco-friendly and durable alternative to traditional rubber. This model is limited to 8,700 pieces.
The EO2023-00W is often referred to as the "ladies" or "mid-size" version, though its sophisticated color palette makes it a versatile "unisex" choice for anyone with a smaller wrist. This model utilizes a compact 36.5mm stainless steel case and thickness 11.6 mm, finished in a warm, elegant rose gold-tone. The contrast between the silver-colored bezel insert and the rose gold markings creates a luxurious, sun-kissed aesthetic.
While it shares the "structural ink" technology with the larger model, the EO2023-00W often appears brighter due to the rose gold accents on the hands and indices. The dial texture further enhances this look by evoking the shimmering surface of a tropical lagoon. Because it is slightly thinner than the men's model, the watch is exceptionally comfortable for daily wear. To complement the rose gold case, it features a lighter-toned, sustainable BENEBiOL™ strap in a light grey, which emphasizes its breezy, maritime theme. This model is limited to 3,400 pieces.
Despite their differences in size and personality, both models are powered by the Caliber E168, an in-house Eco-Drive quartz movement famous for its ability to convert any light source—natural or artificial—into energy. Once fully charged, these timepieces can run for up to six months in total darkness while maintaining a strict accuracy of ±15 seconds per month.
Concept and Inspiration: The "Structural Ink" Revolution
Citizen Promaster BN0167-09W
Citizen Promaster EO2023-00W
Shared Specifications of Both Models
Both models utilize a mineral crystal to protect the dials. Furthermore, true to Promaster Marine standards, both are water-resistant to 200 meters and are ISO-compliant, meaning they are officially certified for scuba diving. Finally, the inclusion of a screw-back case and screw-down crown ensures a hermetic seal capable of withstanding the intense pressure of the deep.
The Citizen Promaster BN0167-09W and EO2023-00W are masterful examples of how modern technology can enhance traditional watchmaking. Whether you opt for the bold 44mm silver edition or the refined 36.5mm rose gold model, you are getting a piece of horological art that captures the soul of the ocean.
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