Worn by: Daniel Dae Kim as Unknown
Reference: Omega Speedmaster
Brand: Omega
Daniel Dae Kim wears the Speedmaster II "Ultraman" in Stowaway that Omega produced in collaboration with Fratello Watches. Stowaway is a Netflix sci-fi movie about a small crew heading for Mars taking on an additional passenger by mistake. The story then becomes a tale of survival with the life support system failing with one extra life to support. Kim is a watch fanatic and owns both #SpeedyTuesday watches. The one he wears in the film was provided by Omega specifically for the production. His character is seen wearing the watch very prominently in a scene with only a few glimpses in the rest of the film.
Source: https://www.fratellowatches.com/speedmaster-in-movies/