Omega Women's 1476.63.00 Constellation Quartz Small Diamond Bezel Watch Precise Swiss-Quartz movement Domed, scratch-resistant sapphire crystal with anti-reflective treatment inside Case diameter: 25.5 mm Stainless-steel case; White Mother-of-Pearl dial with diamond bezel Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion