High fidelity audio apparatus ; electroacoustic emphasizers ; Personal headphones for sound transmitting apparatuses ; Headphones ; headphones-microphones combinations ; wireless headsets ; speaker switches ; charging cables for headphones ; cases for headphones ; racks adapted to house audio apparatus ; Noise protection means in the form of headphones; noise suppressors ; amplifiers; Noise suppression apparatus; downloadable applications ; software and applications for mobile devices
Electrical and Scientific ApparatusMaintenance of communications equipment; Installation and repair of computer hardware; Installation of wireless telecommunications equipment and wireless local area networks
Building Construction and Repairanalysis and evaluation of product design ; design and testing for new product development ; advice relating to the development of computer systems ; technical design ; technical engineering
Computer and Scientific