The Dell Plantronics B4220T Voyager 4220 Black Wireless Bluetooth Headset is a high-quality headset designed for comfort and convenience. With a sleek headband form factor and ear-pad style, this headset provides a snug fit for extended use. The wireless Bluetooth technology allows for hands-free connectivity, while the adjustable headband and built-in on/off switch offer customization options. The closed-back design and stereo sound enhance the overall audio experience, making it ideal for laptop and desktop use. The boom microphone type ensures clear communication, making it a great choice for professionals and tech enthusiasts alike. No dongle. Works great