Watch with smooth case. The enamel dial has Arabic hour numerals and a single "eye" hand at the center—a typical feature of Breguet watches. The movement has separate bridges with rotating barrel. The escapement is of the ruby-cylinder type. The balance pivots hold the "parachute" suspension designed by the Parisian clockmaker for shock protection. Breguet invented a cheap, simple watch that could be produced in small runs thanks to a subscription and down-payment system, hence the name souscription. The secret signature—invented by Breguet as a protection from imitators and counterfeiters—was etched on the dial with a diamond tip guided by a pantograph.