Citizen is celebrating the 50th anniversary of its Eco-Drive solar technology with a limited edition timepiece that highlights both heritage and craftsmanship. The Eco-Drive 50th Anniversary Edition (AQ4091-56W) honors the brand’s pioneering role since 1976 when it introduced the first-ever analog solar-powered watch, setting the stage for today’s models that recharge from any light source and run for months without a battery change.
The standout feature of the new watch is the rich green dial crafted from traditional Japanese washi paper. Hand-dyed in chitose midori-a deep green shade inspired by evergreen pine needles and symbolizing longevity-the dial’s unique color is achieved through a meticulous process. Artisans first apply a classic yellow dye called ibuki kariyasu before layering indigo blue on top, creating a complex and vibrant hue.
Japanese washi paper has a centuries-old history, traditionally used in sliding doors and lanterns because of its ability to diffuse light softly. In this watch, it serves a dual purpose: allowing light to reach the solar cells beneath while providing a deep, textured look that shifts subtly depending on lighting. The dial’s changing shades are complemented by a golden second hand and Citizen’s signature eagle logo.
The 40 mm case and bracelet are made from Citizen’s proprietary Super Titanium coated with Duratect Platinum. This material is about 40% lighter than steel and five times harder, offering superior scratch resistance, corrosion protection, and skin-friendly wear-a significant advantage over standard stainless steel used by many competitors.
Under the hood, the watch runs on the Caliber A060 Eco-Drive movement, known for its high precision with an accuracy of ±5 seconds per year. It includes a perpetual calendar that doesn’t require adjustment until 2100 and can operate for up to 18 months on a single charge when in power-saving mode. This longevity highlights why Eco-Drive remains a strong contender against Apple, Samsung, and other smartwatch makers seeking sustainable power solutions.
Limited to just 650 pieces, the Citizen Eco-Drive 50th Anniversary Edition will be available starting May 2026 with a price tag around $3,100. Key features of the watch include:
- Rich green dial made from traditional Japanese washi paper hand-dyed in chitose midori
- 40 mm case and bracelet crafted from Super Titanium with Duratect Platinum coating
- Caliber A060 Eco-Drive movement with ±5 seconds per year accuracy
- Perpetual calendar accurate until 2100
- Power reserve of up to 18 months in power-saving mode
- Limited edition of 650 pieces
- Price around $3,100
This commemorative model not only honors Citizen’s solar watch legacy but also offers a unique blend of traditional Japanese artistry and advanced materials that few in the watch industry match.
As smartwatches continue to dominate, mechanical and solar-powered watches like this signal a renewed appreciation for craftsmanship and eco-friendly technology. Tracking how Citizen evolves its Eco-Drive line-potentially integrating even more sustainable materials or smart features-will be key for fans of solar-powered timekeeping in the coming years.