Acoustical transducer systems for reproducing sound, loudspeaker systems, audio speakers; multimedia projectors, digital projectors, video projectors, projector cases, cables for video display devices, optical lenses; audio headphones, music headphones, stereo headphones, earphones and headphones [, eyewear, namely, electronic media displays worn on the head of the viewer, portable multimedia player, head-mounted video displays, wearable computer peripherals ]