CITIZEN is proud to announce the launch of the thinnest watch in the world, just 2.98 mm thick: "Eco-Drive One". The project was created to commemorate the 40 years of history of Citizen Eco-Drive® technology, based on energy deriving from light (natural or artificial). The "Eco-Drive One" model, with a movement just 1.00 mm thick, is housed in a case made of dark gray Duratect DLC steel enhanced by a silver-colored cermet bezel. Anyone who wears Eco-drive One will have the feeling of becoming one with their watch. Eco-Drive One: Elegance. In its purest form.

- Steel case with Duratect (DLC) treatment and silver-colored bezel (Cermet)
- Diameter 39.0 mm and thickness 2.98 mm.
- Black dial with super thin steel-colored indexes and hands
- Sapphire glass with anti-reflective treatment
- Ecodrive Cal. movement 8826 - 12 month power reserve when fully wound, and accuracy ±15 seconds per month
- Black crocodile leather strap
- Anti-reflective sapphire glass
- Waterproof up to 3 atm