A portable communication unit is provided that permits a cord to be received and stored easily, while preventing undesired unwinding of the cord. Even when the communication unit is carried and stored together with a magnetic card containing data, a magnetic-side socket of a magnetic connector mounted at a front end of the cord is unlikely to influence the data on the magnetic card. The portable communication unit includes electric circuits having a predetermined communication function, a receptacle case holding the electrical circuits, a cord connected at one end thereof to the electric circuits and extending to the exterior of the receptacle case, and a magnetic-side socket of a magnetic connector provided at a front end of the cord.