Aerials; Headphones; Radios; Subwoofers; Audio equalizer apparatus; Audio interfaces; Audio mixers; Battery chargers for use with smartwatches; Cassette players; Data processing equipment, namely, couplers; DVD players; Ear pads for headphones; Earpieces for remote communication; Headsets for telephones; Headsets for use with computers; Horns for loudspeakers; Masts for wireless aerials; Portable media players; Radio sets; Transmitters of electronic signals; Virtual reality headsets; Wearable...