OmegaSpeedmaster Moonwatch Professional

From the retailer listing

The Speedmaster Moonwatch is one of the world’s most iconic timepieces. Having been a part of all six moon landings, the legendary chronograph is an impressive representation of the brand’s adventurous pioneering spirit. Presented on a five-arched-links-per-row bracelet, this 42 mm Moonwatch in 18K Sedna™ Gold features sapphire crystal glass on the front as well as on the caseback. Inspired by the 4th generation Speedmaster style worn on the moon, it also includes a brown step dial and an asymmetrical case with diamond-paved bezel. The watch is driven by the OMEGA Co-Axial Master Chronometer Calibre 3861, which powers the small seconds sub-dial, 30-minute recorder and 12-hour recorder, along with the central chronograph function.