Worn by: Gene Hackman as Buzz Lloyd
Reference: Omega Speedmaster
Brand: Omega
In the 1969 American sci-fi movie Marooned, Buzz Lloyd (played by Gene Hackman) wears an Omega Speedmaster Professional. One with an orange chronograph second hand, like the Ultraman.
Source: https://www.fratellowatches.com/speedmaster-in-movies/