The Omega Constellation ref: 131.55.29.20.55.002 features a 29mm case crafted from yellow gold. It is powered by the automatic winding Omega caliber 8701, which includes a Co-axial escapement for enhanced precision. The watch showcases a white mother of pearl dial and includes a date function. This model was released in 2018 and is certified as a chronometer, ensuring its accuracy and reliability.