Eco-Drive has made countless technological breakthroughs, and improved sustainability in the watch market. After half a century, the development of Eco-Drive PHOTON, the Eco-Drive 50th Anniversary Limited Edition, represented an opportunity to tackle further new challenges.
A photon is a quantum of light. Taking the Double Slit Experiment—a legendary experiment that demonstrated light’s unusual properties—as its starting point, the form of Eco-Drive PHOTON has an intuitive beauty that is derived from a scientific concept. It is a model fit for Eco-Drive’s milestone 50th anniversary.
Eco-Drive PHOTON rethinks Eco-Drive from first principles. Using a slitted metal dial rather than a normal light-transmittable dial makes it immediately clear that there is light passing through. The watch’s form is thus a pure expression of the function.
Ever-changing colours born of light interference
Structural colours are generated when microscopic structures reflect or interfere with light. A layer of structural colour film is inserted between the slitted dial and the solar cell. As a result, vivid structural colours which change depending on the viewing angle can be glimpsed through the dial slits.
A multilayer dial structure with overlapping slits
Two slitted metal dials on top of one another create an interference fringe-like pattern. The further addition of a slitted dial cover results in a truly multilayered, three-dimensional structure. Form follows function in a watch with a truly unique personality.
Each watch carries the Eco-Drive 50th Anniversary logo and its own limited-edition number on the case back.
The latest Caliber E036 keeps running for roughly 365 days on a full charge. A complete overhaul of the circuit system enhanced the core specs, enabling the movement to drive heavier hands despite its thinness. Adaptable to a wide variety of designs, Caliber E036 is the next-generation Eco-Drive standard.
No battery to replace. Any light will do — sunlight, or the faint light of a room. Fifty years of refinement, in a movement built for the next fifty.
Case and bracelet are Super Titanium™ — at least five times harder than stainless steel, light on the wrist and kind to the skin.
The rounded octagonal case runs seamlessly into the bracelet, a single enveloping form. Turn the watch over and the case back carries the Eco-Drive 50th Anniversary logo alongside your own edition number.
CITIZEN's surface-hardened titanium — at least five times harder than stainless steel, and markedly lighter.
Titanium carbide on the 53W; DLC and amber yellow on the 59X. Hardness up to 2,300 HV, gold colour that holds.
Anti-reflective coated, so the dial reads clearly at any angle.
Hands and indices stay legible long after the light has gone.
Used for selected dial components.
A special presentation box carrying the slit motif of the dial.
The presentation box is finished with the same slit pattern that defines the dial, the 50th Anniversary mark set into the lid. Everything about this edition is made to be kept.
| Brand | CITIZEN Eco-Drive PHOTON |
|---|---|
| Models | BJ6560-53W & BJ6569-59X |
| Occasion | Eco-Drive 50th Anniversary Limited Model |
| Launch | Autumn / Winter 2026 |
| Limited quantity | 5,000 pieces worldwide each |
| Case / Band | Super Titanium™ — Duratect titanium carbide (BJ6560-53W); Duratect DLC & Duratect amber yellow (BJ6569-59X) |
| Glass | Dual spherical sapphire glass with anti-reflective coating |
| Case diameter / thickness | 39.6 mm / 9.9 mm (design specification only) |
| Movement | Cal. E036 — Eco-Drive, runs approximately 365 days on a full charge (in power save mode) |
| Accuracy | ±15 seconds per month |
| Water resistance | 5 BAR |
| Other | Luminous hands and indices · recycled materials used for selected dial components · limited edition box · case back engraved with the Eco-Drive 50th Anniversary logo and an individual limited-edition number |
*Cal. E036 runs for approximately 365 days on a full charge in power save mode.
Eco-Drive is CITIZEN's proprietary technology that powers watches using any natural or artificial light source, eliminating the need to replace batteries.
Super Titanium™ is CITIZEN's proprietary technology treating solid titanium with surface hardening; it is at least five times harder than stainless steel.
Structural colour is produced by microscopic structures in the ink layer reflecting light, not by pigment.
Leave your details and our team will contact you with launch and availability details for India.
All fields marked * are required.
