[Worldwide limited to 650 pieces] The Citizen AQ4091-56W｜Eco Drive 50th anniversary x Chitose green Japanese paper dial x Super titanium, one of the pinnacles wearing the color of a thousand years

A special limited edition model from Citizen's highest line "The Citizen" to commemorate the 50th anniversary of Eco-Drive.AQ4091-56Wis scheduled to be released on May 28, 2026. This is a rare piece, limited to 650 pieces worldwide, and the price is 462,000 yen (tax included).
The Japanese paper dial is clad in Chitose Midori, a plant-dyed green created by layering indigo with the natural dye Ibuki Kariyasu, giving it an appearance that transcends the frame of a watch and is a work of art.

50 years have passed since the Eco-Drive was born, and Chitose Green, chosen as the color for the dial to mark this milestone, is a traditional Japanese color that has been passed down since the Heian period. High-precision solar with an annual difference of ±5 seconds, the lightness of super titanium, and Japan's dyeing culture resonate in a single watch. It's a piece that easily transcends the limits of a limited edition item and has value that transcends eras.

Even when you line them up or look at them, you can feel the weight of the times.

When you put it on your arm, the color of a thousand years dwells in your hand.

Chitose green Japanese paper dial - the breath of nature ticks away time.

Precise finish of super titanium and Duratect.

■ Main features

• Eco-Drive 50th Anniversary Limited Model:Special edition limited to 650 pieces worldwide
• Chitose green Japanese paper dial:A traditional color of vegetable dyeing made by layering indigo over Ibuki Kariyasu. Japanese colors inherited from the Heian period
• Equipped with Cal.A060:Photovoltaic eco-drive, high-precision design with an annual difference of ±5 seconds
• Super Titanium x Duratect Platinum:Achieves 40% lighter weight and 5 times more surface hardness than stainless steel
• Perfect features:Unique technology that integrates three functions: JIS class 1 magnetic resistance, shock detection, and automatic needle correction.
• Dual spherical sapphire glass (clarity coating):High-grade glass with spherical processing and coating on both sides
• Approximately 1.5 years of operation when fully charged:When power save is activated. No need for regular battery replacement
• 10 ATM waterproof:Reinforced waterproofing for daily life so you can feel safe around water
• Nickel allergy resistance:Consideration for those concerned about metal allergies
• Charge amount display function:You can check the remaining amount at a glance
• Made in Japan:The highest domestic model finished with The Citizen's quality standards

■Specs

■ Chitose Green: A story of colors passed down over a thousand years

The ``Chitose green'' on the dial of the AQ4091-56W is created by layering indigo on the yellow of the natural dye ``Ibuki Kariyasu'', a traditional Japanese dyeing that has been around since the Heian period. The deep green color created by dyeing with plants can only be reproduced through a combination of dyes and the skill of craftsmen, giving it a genuine rarity that cannot be achieved through mass production.

By finishing this color on the Japanese paper dial, the watch becomes more than just a timekeeping tool. The texture of the fibers unique to washi paper, and the expression that changes depending on how the light hits it: Every time you look at the dial, you can feel the depth of Japan's dyeing culture. There is no design more appropriate for a model celebrating the 50th anniversary of Eco-Drive.

■ “Overwhelming accuracy” with a yearly difference of ±5 seconds

This model equipped with Cal.A060 boasts high accuracy as a photovoltaic eco-drive with an annual difference of ±5 seconds. The design has a maximum accuracy of only 5 seconds throughout the year, making it the highest level of accuracy for a wristwatch used on a daily basis. When fully charged, it can be operated for approximately 1.5 years in power save mode, so there is no need to worry about replacing batteries.

Eco-Drive, which pioneered the innovation of ``running a clock with light'' 50 years ago, has reached the pinnacle of precision after half a century. This is a book where you can feel the answer.

■ Super titanium x Perfectex represents the “top material”

The super titanium used for the case and band is Citizen's original material that has been surface hardened with Duratect Platinum. It is 40% lighter than stainless steel, and its surface hardness is 5 times more. Weighing approximately 77g, this watch is exceptionally light for a watch of this class. You won't get tired even if you wear it all day, and yet the texture on your wrist speaks of true luxury.

Furthermore, Citizen's proprietary technology "Perfex" integrates JIS class 1 magnetic resistance, shock detection function, and automatic hand correction function to protect time accuracy from all daily environmental changes. Even if the hands become misaligned due to external factors, you can rest assured that the automatic correction will work, giving you the reliability you deserve for a watch in this price range.

■ ``Pursuit of easy viewing'' with dual spherical sapphire glass

The glass uses dual spherical sapphire glass. Spherical processing is applied to both the inside and outside, and a clarity coating is applied to thoroughly suppress light reflection. Even outdoors in the sunlight, the dial is clearly visible, as if there were no glass.This ease of viewing is also a way to bring out the delicate colors of Chitose Green to the fullest.

■ Rarity of 650 pieces worldwide and peace of mind with a 10-year warranty

The scale of the release, limited to 650 pieces worldwide, is a true rarity even from a collector's point of view. The warranty system, which includes a 10-year domestic warranty by registering with the Citizen Owners Club, can be said to be an honest response to the price of 462,000 yen. As the culmination of 50 years of eco-driving, this is a book whose value will deepen over time.

■ Recommended for these people

• Those looking for the highest model of The Citizen
• Those who are attracted to traditional Japanese culture and dyeing
• Those who want to experience the highest precision of Eco-Drive
• Those who value the lightness and durability of super titanium
• Those who want to add a world-limited model to their collection
• Those looking for a gift for a special milestone such as a retirement anniversary or 60th birthday celebration
• Those who want to own The Citizen with a Japanese paper dial
• Those who want to continue using the product for a long time without having to regularly replace batteries

■ Buyer's comment

When I picked up the AQ4091-56W, the first thing I did was gasp. The Chitose green Japanese paper dial is difficult to convey in photos, and you can only appreciate its depth and dignity when you see the real thing. When you look at it after learning about Kariyasu Ibuki's background in dyeing with layers of indigo, you realize that this green is not just a color, but the culmination of hundreds of years of human hands and techniques. Naturally, The Citizen's annual difference of ±5 seconds x super titanium is also at the highest level. This is a truly monumental piece, suitable for the milestone of 50 years of eco-drive.

— Nanapure Buyer Fujimuro

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