Apparatus for recording, transmission or reproduction of sound or images; data processing equipment; computers; acoustic couplers; remote control apparatus for radios, televisions; audio- and video-receivers; batteries, electric; telephones; computer memory devices; connected bracelets in the nature of wearable activity trackers; video telephones; video baby monitors; loudspeakers; electric installations for the remote control of industrial operations; electro-dynamic apparatus for the remote...