9 Audiovisual and optical apparatus and instruments, namely, configurable head-mounted audiovisual receivers; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; virtual reality apparatus and instruments, namely, virtual reality headsets and goggles; recorded and downloadable media, namely, virtual reality software for recreational, leisure, entertainment, education, training, and sport purposes; downloadable computer software for use in enabling and providing a virtual, augmented, or mixed reality experience; downloadable application software for mobile phones, handheld digital devices, and computers, namely, software for use in developing and creating virtual reality, augmented reality, and mixed reality experiences; downloadable virtual reality software for object tracking, motion control and content visualization; downloadable virtual reality software for users to experience virtual reality visualization, manipulation and immersion; downloadable virtual reality software for operating virtual reality headsets; downloadable augmented reality software for object tracking, motion control and content visualization; downloadable augmented reality software for users to experience augmented reality visualization, manipulation and immersion; downloadable augmented reality software for operating augmented reality headsets; downloadable mixed reality software for object tracking, motion control and content visualization; downloadable mixed reality software for users to experience mixed reality visualization, manipulation and immersion; downloadable mixed reality software for operating mixed reality headsets; computers and computer peripheral devices; virtual reality headsets; virtual reality computer hardware; audio-visual headsets and helmets adapted for virtual reality and operating system software for use therewith; eyewear; virtual reality glasses; augmented reality glasses in the nature of smart glasses; handheld virtual reality controllers; handheld augmented reality controllers; earphones; headphones; video display hardware; video drivers for video eyewear; digital media streaming devices; downloadable computer software for use as an application programming interface (API) for use in building software applications and virtual reality content; downloadable software for transmitting data, graphics, audio or video over electronic communications networks; downloadable computer software for creating, offering, hosting, and delivering conferences, meetings, demonstrations, tours, presentations, and discussions via virtual reality; downloadable interactive entertainment software, namely, for use in enabling and providing a virtual, augmented, or mixed reality experience; downloadable gesture recognition software; downloadable software for creating, managing, and interacting with an online community; downloadable software for integrating electronic data with real world environments for the purposes of entertainment, education, gaming, communicating, and social networking; downloadable software for converting natural language into machine-executable commands; downloadable software, namely, an interpretive interface for facilitating interaction between humans and machines