Plantronics Savi W440 Brand New Includes One Year Warranty New Product # 203946-01 Old Product # 83359-01 The Plantronics Savi W440 is an USB convertible Wireless Headset. It has been designed for those who need professional Wireless headset, high-quality and robust with excellent sound quality for your calls. Its DECT technology delivers high definition audio and controls interference from Wi-Fi networks. This headset has a volume adjustment, close / pick up and mute a single button. Enjoy the experience of PC sound quality with this versatile headset that offers three different wearing styles for your comfort. The Savi W440 offers a hot swappable battery for unlimited talk time and lets you maximize productivity with wireless roaming freedom up to 300 feet. Savi W440 Features New DECT 6.0 Technology DECT Security Certified Interference Free Communication Increased Clarity / Enhanced Security Wider Range / Network Friendly 1.9GHz Wireless Headset Dedicated for Cordless Phones by the FCC 30% Battery Life Increase Over 5.8GHz Mute One-Button Answer Noise-Canceling Microphone Adjustable Volume Digital Signal Processing Technology Enriches Sound Quality Interference Free Communication DSP Digitally-Enhanced Sound Increased Clarity / Enhanced Security One-Touch Call Control Up To 300' Range