Blackwire C325-M Headset (Over the Head/Stereo) Enter UC with the best-featured headset you never thought your budget could afford. Blackwire 300 Series USB headsets are a simple-to-use, comfortable, and durable choice for conference calls, Web-based training, and PC multimedia applications. Inline controls make it simple to answer and end PC calls and control volume and mute. The lightweight metal headband provides durability while delivering a comfortable and secure fit, while the unique Dynamic EQ feature optimizes sound quality and adjusts settings on the fly, creating outstanding sound for voice, music, and multimedia. The Blackwire 300 Series is ideal for those new to PC telephony as well as organizations looking for a UC solution that's easy to roll out, manage, and upgrade.