The Omega Constellation ref: 131.25.29.20.52.002 features a combination of yellow gold and stainless steel in its 29mm case. The watch is powered by the automatic Omega caliber 8700 movement, which includes a co-axial escapement and is certified as a chronometer. The champagne dial displays the date function, adding to its functionality. This model was produced in 2018, showcasing a blend of modern technology and classic design elements.