Electronics products, namely, earphones, earphone in-ear, earphone on-ear, earphone around-ear, headphones, audio headphones, wireless earphones, wireless headphones, digital phones, microphones, microphone speakers, microphone adapters, wireless microphones, transmitters and receivers for wireless earphones, transmitters and receivers for wireless microphones, transmitters and receivers for cellular phones; cellular phones; cellular phone accessories, namely, hand-free audio devices for mobile phones; audio devices in the nature of speakers for pda and notebooks and pc computers; audio speakers; audio devices, namely, speakers, earphones, headphones, microphones, and microphone speakers; audio devices in the nature of earphones, headphones, microphones, and microphone speakers for sports helmets; wireless audio devices in the nature of speakers, microphones and microphone speakers; digital audio recorders and players; audio speaker enclosures; sound amplifiers; telephone headsets; wireless telephone headsets; portable listening devices, namely, mp3 players, mp4 players, multiple players, and digital players; digital audio players; multiple players, namely, digital audio and video players; earphone sleeves; earphone cases and covers; earphone and headphone adapters; electronic instruments for monitoring and controlling sound pressure, audio frequency and signal level and impedances