TelephoneStuff.com Plantronics H171N DuoPro Monaural Noise-Canceling.. H171N

Versatility is the hallmark of the DuoPro line, with best-in-class audio performance and all-day wearing comfort for call center and office professionals. Features: - Noise-canceling microphone that features an innovative anti-twist boom for perfect placement every time - For noisy environments (over 65 dB) - Versatility for new or experienced headset users—can be worn in either over-the-head or over-the-ear style - Does not include neckband for behind-the-head wearing style - Supports SoundGuard Plus and Call Clarity technologies for superior sound - Can be worn on either ear - Quick Disconnect lets you walk away from your phone while still wearing your headset - Adjustable clothing clip NOTE: Requires Plantronics amplifier.