Selecting a Headset Microphone to Use with Rosetta Stone Rosetta Stone® Speech Recognition technology is a key element of the language-learning solution. A computer headset with a microphone is needed to use this feature. We recommend a USB headset with a microphone. For best results with our Speech Recognition feature, we recommend a headset with a directional microphone and noise-cancellation capability. The microphone part of the headset should easily adjust into a consistent position one to two inches from the corner of the speaker’s mouth. The recommended headset microphones have passed Rosetta Stone quality assurance tests for speech recognition. Recommended Microphones Each of the recommended microphones listed here are USB headset microphones that are compatible with both Windows and Macintosh operating systems. Manufacturer Model Website Phone Number Califone 3066-USB* www.califone.com 1-800-722-0500 Logitech USB 350 www.logitech.com 1-800-884-9480 Logitech USB 250 www.logitech.com 1-800-884-9480 Logitech ClearChat Pro USB www.logitech.com 1-800-884-9480 Logitech ClearChat Comfort USB www.logitech.com 1-800-884-9480 Microsoft LifeChat LX-3000* www.microsoft.com 1-800-642-7676 Plantronics Audio 500 www.plantronics.com 1-800-544-4660 Plantronics Audio 470 www.plantronics.com 1-800-544-4660 Plantronics Audio 655* www.plantronics.com 1-800-544-4660 *Starred models are especially durable and recommended for computer labs or extended use. Note: These microphone recommendations are based on laboratory testing. Computer systems and user environment may vary, which could impact microphone performance. Our customer care experts are available to assist you and provide you with technical support through your language learning experience. Customer Service and Technical Support: US and Canada: 1-800-280-8172 International: 1-540-432-6166 Online: RosettaStone.com/Support .