BLACKWIRE 3200 SERIESThe 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.TOP FEATURES Available in monaural (C3210/C3215) or hi-fi stereo with passive noise reduction (C3220/C3225) Variants include universal USB or USB-C