A device for controlling at least one electronic function of a portable object, in particular a timepiece, includes a control stem capable of moving axially between at least a first and a second stable position, or between at least a stable position and an unstable position. The control device also includes an actuation element made from an electrically insulating material rigidly connected to the control stem, as well as at least one flexible electrical switching element provided to be mechanically actuated by the actuation element when the control stem is moved axially, the at least one flexible electrical switching element being capable of moving between a closing position in which the at least one flexible electrical switching element closes an electrical circuit of the control device, and an opening position in which the at least one flexible electrical switching element opens the electrical circuit.