Brand New Authentic Omega Seamaster Aqua Terra Women's Watch Model 231.20.30.20.55.004. Stainless Steel case with Stainless Steel Brushed watch band. Push Button Foldover Clasp clasp. Dial description: Mother of Pearl dial. Mother of Pearl dial. Automatic Self Winding - Chronometer movement. Scratch Resistant Sapphire crystal. Case size: 30mm. Case thickness: 10mm. 150 Meters - 500 Feet. water resistant. 5 year WatchMaxx warranty. Also known as model: 231-20-30-20-55-004, 23120302055004.