Omega Men's 1212.30.00 Constellation Quartz Two-Tone Watch Importado Precise Swiss-Quartz movement Domed, scratch-resistant sapphire crystal with anti-reflective treatment inside Case diameter: 33.5 mm 18kt. Yellow gold - stainless-steel case; Silver-white dial; Date function Water resistant to 165 feet (50 M): suitable for swimming and showering