Earphones; Smartphones; Audio-receivers and video-receivers; Audio interfaces; Chargers for batteries; Computer peripheral equipment; Converters for electric plugs; Earphone accessories, namely, earphone cushions, earphone pads, earphone cases, and earphone extension cords; Electric connectors; Electrical wires; Light emitting diode (LED) displays; Personal headphones for use with sound transmitting systems; Transmitters of electronic signals; USB charging ports; Wireless chargers