The Blackwire 725 USB headset helps you tune out distracting noises so you can tune in to your work. It features Active Noise Canceling (ANC) technology to minimize distracting external sounds, along with a noise-canceling mic that ensures that your voice is heard crystal clear on the other end. Along with PC-based calls, it�s great for listening to music and multimedia in high-fi stereo. Smart sensor technology lets you answer a call by simply putting the headset on. Use the intuitive inline controls for answering/ending calls, adjusting volume, and muting. Plus folding ear cushions and a carrying case make it easy to take on the go. With the Blackwire 725, keep the focus on work � and distractions at bay.