Apparatus for wireless transmission of acoustic information; Audio- and video-receivers; Audio-video receivers; Audio amplifiers; Audio cables; Audio headphones; Boom boxes; Cell phone cases; Cell phone covers; Cell phone straps; Charging appliances for rechargeable equipment; Computer keyboards; Connecting electrical cables; Data cables; Diving goggles; Earphone accessories, namely, earphone cushions, earphone pads, earphone cases, and earphone extension cords; Earphones and headphones; Elec...