Acoustic apparatus and instruments, included in this class; apparatus for recording, transmission or reproduction of sound; accumulators (electric) and chargers for accumulators; acoustic couplers; batteries; cases adapted for acoustic apparatus and instruments, with the exception of hifi-products for vehicles

Medical apparatus and instruments; medical otological apparatus and instruments and their parts included in this class and medical apparatus for producing sounds for diagnosing/treating tinnitus; hearing aids and their parts, included in this class; hearing aid devices incorporated into spectacles