Brand New Authentic Omega Constellation Co-Axial Master Chronometer Grey Dial Stainless Steel Men's Watch Model 131.10.39.20.06.001. Stainless Steel case with Stainless Steel watch band. Deployment with Push Button and Foldover clasp. Fixed bezel. Dial description: Rose Gold tone hands and Index hour markers with minute markers around the outer rim on a Grey dial. Automatic Chronometer movement. Powered by Omega Calibre 8800 engine with 55 hours power reserve. Watch functions: Date, Power Reserve, Hour, Minute, Second. Scratch Resistant Sapphire crystal. Round case shape. Case size: 39mm. Transparent case back. 50 Meters - 165 Feet water resistant. 5-year WatchMaxx warranty. Also known as model: 13110392006001.