Plantronics 85619-12 Wired Headset, Gray Lightweight metal headband offers durability and a customizable, comfortable fit. Connectivity Technology: Wired Intuitive inline controls to answer/end calls, control volume, and mute Smartly placed indicator lights and helpful audio alerts give user call, mute, and volume status Wideband audio with noise-canceling for high-quality PC telephony Dynamic EQ feature automatically adjusts audio for voice or multimedia use