Material Resin Country of Origin China Silver-tone watch featuring octagon-shape digital dial with auto calendar and LED light Equipped w/ a CR2016 model battery, which is rated to last (up to) 7 years before needing servicing/replacement A green LED backlight provides additional visibility in darker environments Japanese quartz movement with digital display Stainless steel link bracelet with foldover clasp; Accuracy: 30 seconds a month.Water-resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion Classic digital watch "Necessity is not the mother of invention, invention is the mother of necessity." These are the words of one of Casio's founders. The people who created Casio were determined to 'invent necessity'- to create products that met latent needs with groundbreaking capabilities no one had ever seen before. Ever since, Casio has been doing just that, bringing new discovery and delight to people around the world. This is Casio's way of building an even more prosperous, richly rewarding world. Suitable for everyday use. Will withstand accidental splashes but not suitable for swimming.