Electric apparatus and instruments for transmission, reproduction, suppression and filtration of sound; headsets and earphones (not for hearing impaired); radio receivers and monitors for reproduction of sound and signals; apparatus for adaptation and calibration of hearing aids; parts and fittings (not included in other classes) for the above mentioned goods

Surgical and medical apparatus and instruments especially designed for persons with defective hearing; hearing aids; headsets and headphones for hearing impaired; hearing aids (not for hearing impaired); medical apparatus for adaptation and calibration of hearing aids; hearing and listening aids (ALS - assistive listening systems and PSA - personal sound amplifiers); hearing protectors; parts and fittings (not included in other classes) for the above mentioned goods