光動能腕錶

The Citizen Eco-Drive PHOTON commemorates the 50th anniversary of the Eco-Drive platform with a limited-edition watch powered by the Cal.E036 light-powered movement. Capable of operating for up to 365 days on a full charge, the movement converts natural and artificial light into stored energy, eliminating routine battery replacements.

The dial references the double-slit experiment through precision-cut openings that reveal structural colors beneath, while silver-tone and black-tone editions feature contrasting accent colors on the seconds hand. A rounded octagonal case and integrated bracelet are crafted from Citizen's Super Titanium, a material that is lighter than steel while offering increased surface hardness.

Both editions feature individually numbered casebacks engraved with the official Eco-Drive Innovation 50th Anniversary emblem. Super Titanium construction provides a lightweight profile while supporting everyday durability, complementing the watch's integrated bracelet design. The architectural dial combines scientific inspiration with layered finishing techniques that change appearance under different lighting conditions.