Citizen Eco-Drive One for sale. ECO・DRIVE ONE This model commemorates the 40th anniversary of Eco-Drive, announced at Baselworld in 2016 as the world's thinnest solar-powered watch. The movement is 1mm thick, and the case is an astonishing 3mm thick. Assembly is entirely done by hand by skilled craftsmen. This AR5004 is the initial bracelet model of the Eco-Drive One. A special high-hardness metal called cermet is used for the bezel and back cover to ensure durability. The bracelet construction is also superb, with a fine 9-row design. The buckle is a highly precise butterfly buckle with a fish-scale finish. The current bracelet specifications of the current model have been downgraded, possibly due to cost-cutting, and the Eco-Drive One with this excellent bracelet construction is only available in the initial model. Product Condition There are minor scratches on the case sides and bracelet from use, but it is in a clean condition without any noticeable scratches. There are many small scratches on the inside of the butterfly buckle due to rubbing. There is a faint scratch on the outer circumference of the crystal, which is not visible in the photos. Currently, the wrist size is approximately 18 cm. One extra link is included. Product Contents ・Watch body ・One extra link ・Aftermarket watch case Unparalleled beauty and wearing comfort. It is a flagship model of Citizen watches, alongside The Citizen. The idea of a 300,000 to 400,000 yen price tag for a two-hand solar-powered watch changes to acceptance when you hold the actual product in your hand.