High-fidelity audio apparatus, namely, amplifiers, speakers; audio amplifiers; personal headphones for sound transmitting apparatus; headphones; earphones; combined earphones and microphones; cordless headphones; electrical switches for loudspeakers; battery chargers, electric charging cables and current converters for use with headphones; carrying cases for headphones; boxes specially adapted for housing audio equipment; noise cancelling headphones; noise suppressor in the nature of electronic sound processing apparatus; sound amplifiers; downloadable computer software for creating and editing music and sounds for mobile devices; apparatus and instruments for sound or data recording, transmission, reproduction or processing; headsets with microphones; loudspeakers; pressure indicators; temperature indicators; speed indicators; audio interfaces; hands-free kits for telephones; satellite-aided navigation apparatus; earbuds for smartphones; audio receivers; electric or electronic sound locating sensors; telecommunications transmitters; vacuum tubes for audio amplifiers; audio receivers

Ear plugs for medical purposes; ear plugs for hearing protection; ear plugs for noise reduction; hearing protectors without the ability to reproduce or transmit sound; medical diagnostic apparatus for testing heart rate, heart rate variability, oxygen saturation rate, blood pressure, respiratory frequency; audiometers for medical purposes; medical apparatus and instruments for use in the measurement and monitoring of physiological parameters; arterial blood pressure measuring apparatus

Maintenance of communication equipment; installation and repair of computer hardware; installation of wireless telecommunications equipment and wireless local area networks; installation, maintenance and repair of audio receivers; installation, maintenance and repair of noise protection equipment, namely, noise cancelling headphones, audio amplifiers, personal headphones for sound transmitting apparatus, headphones, earphones, combined earphones and microphones

New product design services; product development; consultancy in the design and development of computer hardware; technical engineering; scientific and technological services, namely, research and design in the field of computer datacenter architecture; industrial design services; product design and development in the field of sound amplification and reduction; product design and development in the field of audio receivers; design and development of computer hardware and software