Poly Blackwire 3210 Wired Over-the-head Mono Headset - Supra-aural - 20 Hz to 20 kHz - Noise Reduction, Noise Cancelling Microphone - USB Type A The Blackwire 3200 Series corded UC headsets are durable, lightweight, easy to deploy and come in a variety of connectivity and wearing options. Add insights from Plantronics Manager Pro, an additional service, and you've got a future proof solution. The Blackwire 3200 series with Plantronics signature audio provides top notch features at a price you can afford.