Assistive listening device for the hearing impaired; Audiometers for medical purposes; Digital hearing aids; Ear plugs for hearing protection; Electric hearing aids; Electrical hearing aids; Electrically-operated hearing aids; Electrically operated hearing aids; Hearing aids; Hearing aids for the deaf; Hearing aids with a noise cancelling function; Hearing protectors without the ability to reproduce or transmit sound; Medical hearing instruments; Medical hearing instruments and parts of such ...