Hearing aids; Electrical hearing aids; Electric hearing aids; Digital hearing aids; Electrically-operated hearing aids; Electrically operated hearing aids; Earmuffs for hearing protection; Ear plugs for hearing protection; Ear muffs for hearing protection; Hearing aids and structural parts therefor; Assistive listening device for the hearing impaired; Hearing aids for the deaf; Hearing aids with a noise cancelling function; Medical hearing instruments and parts of such devices; Wireless trans...