|Dual connection enables functionality in traditional and PC-based telephone environments. Digital signal processing delivers enhanced sound quality and consistent volume level. Noise-cancelling microphone ensures clear communication. Wideband audio creates high definition sound quality. Multiple wearing styles suit any individual's preference for added comfort. Headset's LCD display makes it easy to set personal sound preferences. A range of up to 120 meters gives users more freedom to move. Multi-unit conferencing feature allows up to four headsets to dock with one base for a conference call.