Hamilton Khaki Field - James Marsden - Sonic The Hedgehog 2
James Marsden wears a Hamilton Khaki Field watch in Sonic The Hedgehog (2020) and it looks like the same watch in the sequel Sonic The Hedgehog 2 (2022).
The watch worn by James Marsden has a black dial, stainless steel case and green NATO strap, so most likely the Khaki Field Mechanical H69529933 (42mm, but it could also be the smaller 38mm version). The strap is the green NATO strap with brown leather bands as can be seen i the close-up photo.
This watch is available on Hamilton for $625 or find this and similar models on eBay for less.
See all Khaki Field models on Hamilton.com.
The Hamilton Khaki Field is a classic field watch and seen in several films (see a list here).
In Sonic 2, two other characters in the film wear Hamilton watches as well: the Hamilton Khaki Navy BeLOWZERO worn by Tom Butler and Hamilton Intra-Matic Auto Chrono worn by Shemar Moore.
In the Sonic The Hedgehog movies, James Marsden plays Thomas "Tom" Michael Wachowski, the sheriff of Green Hills, known to Sonic as "Donut Lord".