Omega Seamaster Planet Ocean 600M ref. 232.30.42.21.01.003 (2015) features a 42mm stainless steel case with a black ceramic unidirectional dive bezel, black dial with date at 3 o’clock, and a stainless steel bracelet. Powered by the Co-Axial Calibre 8500, visible through the sapphire caseback, this certified chronometer offers water resistance to 600 meters, a helium escape valve, and scratch-resistant sapphire crystal, combining Omega’s dive watch heritage with professional-grade functionality.