ECO-DRIVE ONE: Making use of unconventional materials to achieve thinness and superior strength. The Limited Edition Eco-Drive One features a cermet case (a combination of ceramic and metal) with a
Citizen Black Perpetual Chrono A-T Mens Watch Product Features Citizen Eco-Drive is Powered by Light, a watch that never needs a battery Anti-Reflective Sap Crystal Japanese-quartz Movement Case Diameter: 45mm