[ Computers; computer peripheral devices; time recording devices, namely, time clocks; telephone apparatus; portable telephones; satellite navigational apparatus; ] Cabinets for loudspeakers; acoustic diaphragms; loudspeakers; [ horns for loudspeakers; radios; microphones; ] personal stereos; [ ear plugs, not for medical use; DVD players; precision measuring apparatus, for use in measuring the efficiency of computer devices; electrical wires and cables; acoustic sound alarms ]