Poly Blackwire 3325 USB-A  provides best-in-class audio experience in a headset built for enterprise deployment. Even better, workers want to wear it so your investment pays off. The great appeal of the Poly Blackwire 3325 USB-A is apparent at first sight. Poly Blackwire 3325 USB-A has a modern, stylish design. Its microphone boom is flexible so workers can customize the fit