Wireless multifunctional in-ear earplug or earphone for transmission, recording, or presentation of data in the nature of audio data used to provide personalized audio for a device user, not for medical use; personalized in-ear earplugs or earphones for use with sound receipt and transmission systems, not for medical use; downloadable computer software for managing information regarding transmission, recording, or presentation of data in an in-ear earplug or earphone; portable digital communications devices all in the nature of ear-borne devices for controlling and personalizing audio, such as focusing on hearing optimization and enhancement, not for medical use
Electrical and Scientific Apparatus