The Plantronics Poly Voyager B4210T UC Bluetooth Headset with BT600 USB Dongle is a high-quality wireless headset designed for use with computers and other devices. With its sleek black design and advanced features such as call functions, microphone mute button, volume control, and noise cancellation, this headset provides a great user experience. The headset also includes a boom microphone for clear communication and is compatible with USB connectors. Made by the trusted brand Plantronics, this headset is a reliable and convenient accessory for any workspace.