DESC: Fellowes' mission is to enthusiastically serve its customers. Fellowes will bring business products of superior quality, usefulness and value to the customers worldwide. It will strive to be the best in the field by developing and following the highest standards of ethical business practice.Fellowes offers Binaural Standard Headset that features call center standard with Stay-Put Click-Stop headband and pillow soft ear cushions and has a noise canceling microphone and AccuBass speaker for maximum sound quality. Tough cable and microphone boom, designed for the rigors of all day use and two speakers for noisy environments gives you the unbelievable sound quality nearly everywhere. It requires the 91515 amplifier