cabinets for loudspeakers; megaphones; smart speakers; wearable speakers; music headphones; noise cancelling headphones; portable speakers; portable vibration speakers; headsets for mobile telephones; microphones; stereo headphones; electronic book readers; wireless earphones for smartphones; wireless earphones; wireless headsets for use with cell phones; wireless headsets for use with mobile phones; speakers for computers; virtual reality headsets; earphones for cellular telephones; earphones for mobile telephones; headphones; earphones and headphones for mobile phones; in-ear headphones; headsets; wireless headsets; headsets for use with computers; earphones; bone conduction earphones; soundbars; adapter cables for headphones; microphones for communication devices; microphone cables; sound amplifiers; remote controls for stereos; audio equipment; portable power chargers