Matt Damon wears an unidentified watch

Matt Damon wears a black tactical watch as Roy Miller in Green Zone (2010). Arms crossed in thought, he shows a round black-cased watch with a dark dial on a black strap, a rugged military piece that fits the chief warrant officer hunting WMDs. The dark dial gives up no maker, so it stays open. Recognise it, or want to guess? Drop it in the comments.