Headphones; earbuds; wireless speakers; cellular phones; recorded software for selecting of sound frequencies, sound source directions and amplification and attenuation thereof; recorded computer operating programs; downloadable computer programs for selecting of sound frequencies and sound source directions and amplification and attenuation thereof; wired and wireless communication protocol products and devices, namely, devices for the transmission and receiving of voice, data and video streams across multiple network infrastructures and communications protocols; computer and data networking products and devices, namely, computer network hubs and switches; radio signal relay products and devices; amplification products and devices; transmission products and devices, namely, apparatus for recording, transmission or reproduction of sound and images
Electrical and Scientific Apparatus