The Poly Voyager 4320 Teams Certified Headset BT700 is a high-quality, black headset designed for portable audio and headphones. With a driver size of USB-A and a Teams version, this headset offers a sleek and stylish design perfect for staying connected on-the-go. The impedance level of 32.0 ensures clear and efficient sound transmission, making it an ideal choice for professionals and consumers alike. The included charging stand 77Z00AA adds convenience to keeping your headset powered up and ready for use at all times.