" I have discussed this with him and he points out that the Rolex Oyster Perpetual weighs about six ounces and would appreciably slow up the use of his left hand in combat. His practice, in fact, is to use fairly cheap, expendable wrist watches on expanding metal bracelets which can be slipped forward over the thumb and used in the form of a knuckle-duster, either on the outside or the inside of the hand. "

― Ian Fleming