Searches Incident to a Lawful Arrest

The Fifth Amendment says no searches of a person shall be performed, but incident to a search warrant and issued upon probable cause. In this case, you don't have probable cause to believe that the watch was when he took the purse out of his pocket. Officer Jerry observes everything, runs down the street after him, cuffs the guy, takes the purse from his pocket. But then the question is, can he also take the watch off of his wrist? And the answer to that is no.