The Citizen Watch Company was established in 1918. In the years since, it has left behind a record of unsurpassed innovation in watch making and design. Their accomplishments include the world?s slimmest LCD watch, the first voice recognition watch, and the world?s first professional dive watch with an electronic depth sensor.More recently, Citizen has staked out a new position as the leader in Ecologically Friendly timekeeping with its Eco-Drive collection of light-powered watches. The watch is powered by Citizen's unique Eco-Drive movement, which is powered by sunlight or any other artificial or ambient light by way of the light-sensitive sapphire crystal and dial, recharging the watch continuously. With regular exposure to light, the Eco-Drive's battery will remain continuously charged for a lifetime of use. This watch's Eco-Drive movement retains a 270-day power reserve. Features Include:Polished Stainless Steel CaseBrushed and Polished Stainless Steel Bracelet with Gold-tone AccentsWhite Dial Gold-tone Hands and Hour MarkersEco-Drive Movement Caliber E031 has a Quartz Movement Powered by A Battery and A Solar Capacitor Recharges the Battery Pull/Push CrownScratch Resistant Sapphire CrystalBush Button Deployment Clasp 28 mm Case Width (Including Crown) 7 mm Case Thickness14 mm Bracelet WidthWatch should fit up to 7 Inch WristWater Resistant 1 Year Manufacturer's Warranty