Whether you work in a busy office or customer service center, the stakes are high with every call. The Plantronics EncorePro 500 headset series delivers superior comfort for all-day wearing; rich, clear conversations; and long-term reliability so conversations can continue without worry. Blackwire USB corded headsets feature Smart Sensor technology that lets you answer a call by simply putting on the headset, making it the most productive and versatile corded headset on the market.