Brand New Authentic Omega De Ville Mini Tresor Diamond Champagne Dial 18K Yellow Gold Fabric Strap Women's Luxury Watch Model 428.57.26.60.99.001. Polished 18K Yellow Gold with Diamond Set case with Black Satin and Calfskin Leather strap. 18K Yellow Gold Tang clasp. Fixed. Diamond Set bezel. Dial description: Polished Rose Gold Hands and Roman Numeral Hour Markers on a Champagne dial. Swiss Quartz movement. Powered by Omega Calibre 4061 engine. Watch functions: Hour, Minute. Push-Pull crown. Scratch Resistant Sapphire crystal. Round case shape. Case size: 26mm. Case thickness: 7.50mm. Mirrored Caseback with a Metallised âHer Timeâ Pattern. 30 Meters - 100 Feet water resistant. 5-year WatchMaxx warranty. Also known as model: 42857266099001.