The Plantronics Savi Office System WO100 is a convertible style that allows you to simultaniously listen to and communicate on both your PC and desk phone. Savi Office is the wireless headset system that unifies voice communications and integrates your desk phone and PC providing business critical sound quality. Use the Savi Office system to mix calls between your PC and desk phone--conveniently combine a desk phone call with a PC call for real-time collaboration or easily switch from one type of audio or device to another. Plus Savi Office offers a longer wireless range for natural movement along with a variety of comfortable wearing styles interactive software for personalization and an adaptive battery system for longer battery life and an energy efficient approach to power usage.