computers, computer sound cards, computer games on CD-ROM and optical disc, computer speakers, audio receivers and audio speakers

universal and custom fit in-ear earpieces not for medical purposes that receive sound signals and protect the ear from high intensity ambient noise and environmental conditions, namely, ear monitors for musicians; earpieces, namely, non-medical ear molds for hearing protection; earpieces for use with headsets, cell phones and music monitors; swimmer's ear plugs; in-ear earpieces not for medical purposes for protection of the ears from noise and environmental conditions, discreet communication...