Worn by: Russell Crowe as Cal McAffrey
Reference: Omega Speedmaster
Brand: Omega
Cal McAffrey wears an Omega Speedmaster Moonwatch 50th Anniversary Limited Series on a black leather strap throughout the film. This special edition features a gilt hippocampus at the top of the dial with the year 1957 printed below, plus the Omega logo and wordmark in red. The watch makes sense for McAffrey's character—a prototypical veteran investigative journalist and one-watch guy who drives a beat-up Saab and cooks boxed mashed potatoes. The Speedmaster appears to be a subtle nod to Robert Redford's red Submariner in All the President's Men, another iconic journalist's watch. The watch is visible throughout, including a pivotal close-up when McAffrey has an epiphany that unlocks the conspiracy at the heart of the story.
Source: https://www.hodinkee.com/articles/russell-crowes-special-omega-speedmaster-in-state-of-play