This excerpt taken from the LOGI 20-F filed May 18, 2005.
PC and Game Console Headsets and Microphones
Logitech offers a complete line of voice access headsets and microphones. This line is designed to provide high-quality performance from many PC and game console applications, including voice-over-Internet communication, speech recognition, and video game voice command. Logitech is one of the worlds largest producers of USB headsets for PCs and game consoles.