Free your workers from their desks with the perfect entry-level Bluetooth wireless headset. Meet the Voyager 4300 UC Series. It’s everything they need to stay connected to all their devices and mobile whether at home or in the office. Keep your teams productive with all day comfort and dual-mic Acoustic Fence technology that eliminates background noise. With the included BT700 USB adapter, you'll be able to walk and talk with ease up to 164 feet away from your computer. You'll have one headset to seamlessly connect to both your mobile phone and PC/Mac. For connectivity to your corded desk phones, you can purchase the Office base (sold separate). When using the Poly Voyager 4320 UC, you'll stay productive with an extended battery, giving you up to 24 hours of wireless talk time. In the case your battery runs low, simply connect the USB cord and you'll be able to use the Voyager 4320 UC as a wired headset. Built with a noise canceling microphone and Acoustic Fence technology, you'll be heard crystal clear and your calls will stay private in a loud home or office environment. Lastly, the Poly Voyager 4320 UC is built for all day comfort with an adjustable padded headband, memory foam ear cushions, a bendable microphone and swivelling speakers. If you prefer to have one ear free then you'll want to choose the Voyager 4210 UC model.