audio speakers; acoustic sound alarms; amplifiers; [ batteries, electric; battery chargers; ] cabinets for loudspeakers; [ camcorders; chargers for electric batteries; ] integrated circuit chips; [ blank compact discs for audio or video recording; blank read-only memory compact discs; ] computer peripheral devices; hands free kits for phones; headphones; integrated circuits; juke boxes for computers; musical juke boxes; loudspeakers; megaphones; microphones; [ computer mouse; ] data processin...