DAVID'S FORMULA

Headphones; cabinets for loudspeakers; loudspeakers; microphones; audio speaker enclosures; telephone headsets; internet phones; portable telephones; video telephones; in-car telephone handset cradles; radiotelephony sets; portable listening devices, namely, MP3 players; portable media players; radio pagers; video cassette recorders and players, compact disc players, digital audio tape recorders and players, electronic diaries; radios