Telephone sets; cellular phones; personal handy cellular phones; portable sound recorders; portable sound players, namely, digital audio players, MP3 players; microphones; headphones, earphones; sound and video recording and playback machines; recording and playing devices for sound and image carriers in the form of optical discs; compact disc players and recorders; players and recorders for mini discs; laser disc players; versatile digital video disk players; magnetic tape recorders and play...