Abstract: The cord has a flexible reinforcing core wire. The reinforcing core wire is formed of one or a plurality of reinforcing fibers such as aramid fibers. A plurality of (for example, three) insulated conductors are twisted together around the reinforcing core wire. The insulated conductors are respectively colored into different colors to be distinguished from each other, and include a plurality of insulated wires twisted together. Each of the insulated wires is formed of a polyurethane copper wire or the like whose conductor is insulation-coated with resin. An insulating outer coating member coats the periphery of the reinforcing core wire and the three insulated conductors. The insulating outer coating member has a substantially circular tube shape in section, and is formed of soft synthetic resin. Accordingly, the cord is reduced in diameter and weight.

Abstract: A double wire cord is used in an electro-acoustic converter, such as earphones and headphones, and has a long first cord and a long second cord. For example, the first cord is substantially circular in cross section and has a large diameter, the second cord is also substantially circular in cross section and has a small diameter, and the second cord can be removably housed in the first cord. The second cord is fitted into the fitting groove of the first code and thus housed in the first cord by pressing the side surface of the second cord against the fitting groove of the first cord, so that one wire cord can be easily provided. Therefore, it is convenient at the time of use and storage.