Casio AMW-320 - Sylvester Stallone - Samaritan
The watch actually plays an important role, key plot point, in the movie. The boy Sam Cleary, played by Javon Walton, has his father's broken watch, which Sylvester Stallone offers to fix.
The 1990s watch in the film has a black dial and a black bezel, with what looks like gold colored hands and markings on the bezel.
The same model is available in different colors, including one with silver markings and hands. Another famous variation of this model is the Casio AMW-320D-9EV with champagne gold dial, which is worn by Arnold Schwarzenegger in Kindergarten Cop (1990).
We can see that the Samaritan Casio is a vintage 1990s model because the pusher buttons are on opposite sides. In newer models produced in the 2000s, the two pushers are both on the left side of the case.
In the Samarian film, the Casio AMW-320 has a green Nato or Zulu strap.
Find this vintage Casio AMW-320 on eBay.
Or find new, similar Casio Analog-Digital models on Amazon.
With thanks to Scott for the ID