9
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
distributed audio systems comprised of one or more user headsets with a microphone and a speaker, one or more portable wireless transmitter and receiver units, one or more remote controls, one or more base stations comprising a wireless receiver, wireless transmitter, and electrical charging circuits, one or more audio communication stations comprising a wireless receiver, wireless transmitter, amplifier, microphone, and speaker; portable wireless transmitter and receiver units; and base stations comprising a wireless receiver, wireless transmitter, and electrical charging circuits