Omega Seamaster Diver 300M ref. 210.22.42.20.03.001 (2021) features a 42mm stainless steel and 18K yellow gold case with a polished blue ceramic bezel and gold diving scale. Its polished blue ceramic dial displays laser-engraved waves, a date at 6 o’clock, and 18K yellow gold skeleton hands and raised indexes filled with white Super-LumiNova. A conical helium escape valve and a blue rubber strap complete the sporty look, while the Master Chronometer Calibre 8800, visible through the sapphire caseback, delivers precision, reliability, and professional-grade dive performance.