The Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph 42 mm is a legendary timepiece that pays homage to its lunar exploration heritage while embracing modern horological advancements. This iconic watch features a 42mm case crafted from 18K MoonshineTM gold, Omega's exclusive pale yellow gold alloy. The case houses the distinctive green step dial with applied Omega logo and indices, also in 18K MoonshineTM gold. The three sub-dials – small seconds, 30-minute recorder, and 12-hour recorder – offer precise chronograph functionality.