Batteries for use in hearing aids; information technology hardware devices, namely, computer hardware and peripherals; audio devices, namely, microphones, amplifiers, audio mixing consoles, headphones, audio speakers, audio signal routers, audio receivers and audio circuit boards; audio/ and visual devices, namely, audio/ and video receivers and audio and visual headsets; audiovisual apparatus, namely, audiovisual receivers and headsets; downloadable and recorded software for application mana...