[Worldwide limited edition of 8,700 pieces] Citizen Promaster BN0167-09W｜Structural color dial x 200m waterproof x Eco Drive, a pair of divers wearing the colors of the deep sea

Citizen Promaster MARINE series will be released in April 2026 as a world limited edition of 8,700 pieces.BN0167-09Whas appeared.
The biggest highlight is the "structural color film" used on the dial. Structural colors, which are created using the interference of light, change their appearance from blue-green to bluish-purple depending on the viewing angle. It is one of the poetic concepts typical of professional masters, as it recreates the beauty of the deep sea at your fingertips, where the way light reaches the water changes depending on the depth of the water, and the colors change.

It is developed together with the women's model EO2023-00W, which is a pair watch, and is perfect for couples. The charm of this model is that it combines the practicality of being fully waterproof for 200m diving, a unidirectional rotating bezel with an integration lock, and Eco Drive, and the special beauty of its structural color.

Limited to 8,700 pieces worldwide—The quiet presence of the structural color dial that embodies the colors of the deep sea.

Pair model EO2023-00W (ladies) - A diver's watch for two.

Approximately 90g, 44mm—The presence of a diver resides on the arm.

Depending on the angle, the structural color film plays with light, from blue-green to blue-purple.

EO2023-00W (Ladies)—Two people wear the same deep sea color.

■ Main features

• Limited to 8,700 pieces worldwide:A limited edition structural color dial model of the Promaster MARINE series. Available with pair model (EO2023-00W)
• Structural color film dial:Due to the structural color produced by light interference, it changes from blue-green to blue-purple depending on the viewing angle. Image of the color of the ocean that changes depending on the depth of the water
• Photovoltaic Eco Drive (Cal.E168):Solar powered, no need to replace batteries. Lasts approximately 6 months when fully charged
• Waterproof for 200m diving:High waterproof performance suitable for serious diving
• Reverse rotation prevention bezel with integration lock:Prevents bezel rotation due to incorrect operation during diving, ensuring safety underwater
• Screw back:Rotating camera back provides a highly airtight and waterproof structure
• Biomass urethane (Benebiol™) band:A plant-derived resin material that is both durable and environmentally friendly. blue gray color
• Recycled materials used for dial parts:Reflects Citizen's commitment to continuing to select sustainable materials
• Class 1 magnetic resistance:Compatible with everyday magnetic environments
• Super Luminova luminous (hands/index):Ensures visibility even underwater and in dark places
• Charging warning function/second hand stop function:Practical functions that support power management and time correction
• Solar charge indicator:Charging status can be checked by needle position
• 1% for the Planet compatible:Participating in an initiative to return 1% of annual sales to global environmental conservation activities
• Eco Mark certified products:Eco-Drive, which does not require battery replacement, receives certification

■Specs

■ “Aesthetics of the deep sea” with structural color film

The structural color film used on the dial of the BN0167-09W uses the physical phenomenon of light interference to create color, rather than color development using pigments or dyes. The same principle that causes rainbow colors to appear on the surface of petroleum-based soap bubbles or CDs; the microscopic structure of the surface reflects light of a specific wavelength, resulting in different colors appearing depending on the angle.

This model expresses a gradation from blue-green to bluish-purple, and the small canvas of the dial embodies the image of the deep sea, where the color changes as the way light reaches it changes depending on the depth of the water. Even if you wear the same watch every day, you can discover new things depending on the way the light hits it.

■ 200m water resistant and a unidirectional rotating bezel with integrated lock, the proof of a true diver.

The BN0167-09W is waterproof for 200m diving, and has full-fledged specifications that can be used for everything from leisure diving to sports diving. The bezel features a unidirectional rotating bezel with an integration lock function, which prevents the bezel from rotating counterclockwise due to incorrect operation underwater, supporting safe management of remaining dive time during diving.

The screw back provides a highly airtight and waterproof structure, and the presence of the case back also gives a solid impression typical of a diver's watch. This balance of authentic specs and the beauty of the structure's color coexist is what makes it a special diver's watch.

■ A “sustainable material” called biomass urethane (Benebiol™)

The Beneviol™ used in the band is a biomass urethane material made from plant-derived raw materials. It is more durable than regular urethane and can be used for a long time. This high durability serves as a practical benefit, as diver's watch bands are often exposed to water, salt, and sweat.

Environmental considerations run through the entire model, including the use of recycled materials for dial parts, participation in 1% for the Planet, and Eco Mark certification. This model reflects Citizen's attitude that the very act of using a good watch for a long time leads to a sustainable lifestyle.

■ Recommended for these people

• Those who have been paying attention to the structural color limited model of Promaster MARINE
• People who are attracted to the special feeling of dials that change color depending on the viewing angle.
• Those looking for a full-fledged 200m waterproof diver's watch with a unidirectional rotating bezel
• Those who want to pair it with EO2023-00W (ladies)
• Those who prefer eco-drive models that do not require battery replacement.
• Those who support environmentally friendly manufacturing such as biomass materials
• People who want to give a special pair watch as an anniversary, birthday, or proposal present

■ Buyer's comment

The structural color dial of BN0167-09W can be seen in the photo, but it is even better in real life. The color, which goes back and forth between blue-green and bluish-purple every time you change the angle, really fits the term ``the color of the deep sea.'' In addition to the limited edition of 8,700 pieces, the fact that it is a pair watch will further encourage purchasers. It has the full specs of 200m water resistance and a unidirectional rotating bezel with an integrated lock, while the eco-drive and biomass band make it a quality product that will last for a long time. We confidently recommend this as a souvenir.

— Nanapure Buyer Fujimuro

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