You have two choices. (1)Assuming it's a watch that S&W authorized a licensee to sell, and it's included in one or more of the past S&W catalogs of accessories, it should be easy to identify, or (2) it's a watch a licensee, or others, made to see if S&W would select it as a factory authorized watch, but it was not selected by the factory, then any identification possibilities are remote. If you can post pictures of the watch, we can check them against the S&W watch catalogs. Either way, I'm sure your son enjoyed the present from Dad! Ed.