Jabra GN2117 Mono Surefit Corded Quick Disconnect Headset for Desk Phone with Surefit Wearing Style Noise Canceling Microphone reduces unwanted background noise and the noise-canceling microphones reduce unwanted background noise and are ideal in crowded and noisy, open office environments. HD Voice - High quality audio for crystal clear conversations Enjoy high-definition sound with HD Voice and get crystal clear, intelligible communication Peak Stop - Peak Stop technology immediately removes potentially harmful loud sounds or tones before they reach your ears and keeps the sound level within the safe range to protect your hearing. Talk in Comfort - Assure total comfort with a wide range of styles that match your individual needs and personal fit requirements. Professional, lightweight, over-the-ear style headset Finely calibrated, coated alloy tube for great sound quality Swing-away boom allows the microphone to be moved out of the way for beverage breaks Use this product with a GN Netcom corded or wireless amplifier 2 -Year manufacturer's warranty ensures this headset is made to last