Omega Constellation Globemaster 188.8.131.52.02.001. 41mm diameter steel case, with tungsten carbide bezel, housing Omega’s Co-Axial Master Chronometer Annual Calendar Calibre 8922 movement. 55-hour power reserve. Water resistant to 100 meters. Opaline silver "Pie Pan" dial, applied index hour markers with the months of the year in-between. Date window at the 6 o’clock position. Sapphire crystal see-through case back. Steel bracelet. Box and papers dated April 2017.