Casio F91W Digital Watch Black Lightweight Alarm Stopwatch LED 7 Year Battery

*"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. Water resistant, not water proof, do not submerge in water, digital sport watch in rectangle case, alarm, chronograph functions, and night light, quartz movement with digital display Measuring modes include net time, split time, and first and second place times, functions include digital stopwatch, hourly time signal, auto calendar, and day/date. Quartz Movement Case Diameter: 33mm Not water resistant