Authentic Omega watch model 131.30.41.21.99.001, featuring a brushed and polished stainless steel case with a fixed grey ceramic bezel. Equipped with a Roman numeral dial crafted from a Grey Meteorite base, accented by polished black stick hour markers, minute markers on the outer rim, and luminous black hands. Includes date display at 6 o'clock powered by the Calibre 8900 automatic mechanical movement (Swiss Co-Axial Chronometer) with push-pull winding crown. Comes with a sapphire crystal scratch-resistant bezel insert and transparent screw-down case back; round case shape measuring 44mm diameter and 13.4mm thickness. Water resistant to 50 meters / 165 feet and includes a 5 year WatchMaxx warranty.