Wired headset. Users transitioning to PC telephony for webinars, conference calls, music, and other multimedia applications. The dynamic EQ feature optimizes your voice quality when you’re on a call and automatically adjusts the EQ settings when you’re listening to music or multimedia. Step smartly into unified communications. Lightweight design. Simple call management. Adjustable headband. Noise-canceling mic with flexible boom filters out background sound. 3.5 mm jack. USB-A connectivity. Sold by each.