9 Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; apparatus for recording, transmission or reproduction of sound or images, namely, microphones, wireless microphones, headphones, audio speakers, cameras, transmitters of electrical signals, receivers for telephone, audio receivers, video receivers, transceivers, wireless receivers and transmitters for portable media players; blank magnetic data carriers; recording discs, namely, prerecorded magnetic data carriers featuring music, video, instructional material in the field of electronics; blank recordable optical discs, DVDs, CD-Rs, cash registers, calculating machines, data processors and computers; fire-extinguisher apparatus