3D spectacles; Audio-receivers and video-receivers; Cameras; Data processing equipment, namely, couplers; Headphones; Portable media players; Projection screens; Set-top boxes; Slide film mounts; Slide projectors; Smartwatches; Television sets; Transparency projection apparatus; Virtual reality headsets; Wearable computer peripherals; Cabinets for loudspeakers; Head-mounted video displays; Movie projectors; Photographic projectors; Picture projectors; Protective carrying cases for portable mu...