Citizen Promaster TV Commercial, 'History Channel Roll Call with Citizen'

John O'Shea, an archeologist from the University of Michigan, explains the reasoning behind divers trying to protect shipwrecks in their neighborhoods. As he speaks, footage is shown of him diving down to the 1912 Keystone Wreck in the St. Lawrence River while wearing his Citizen Promaster 1000M Professional Diver watch.