The line between design and technology just got smaller. Incredibly thin and the first of its kind, the Eco-Drive One has arrived in celebration of Citizen's 40 years of Eco-Drive Technology. It is the world's thinnest light powered watch at just 2.98mm*. The well thought out design of this timepiece is reflected in the detail of the watch components, with 85 components in a movement 1.00mm thin. This model features a 10 month power reserve, stainless steel case and bracelet with Duratect (surface hardening technology), black sapphire crystal dial with cermet (ceramic + metal) bezel and anti-reflective sapphire crystal. *Dimensions are nominal. Actual product size may be up to .22mm thicker. Caliber number 8826.