Plantronics headsets have become the world's talking point, with more than six million in use today. The Tri Star headset offers premium sound quality & is the first to combine light weight & small size with a unique design to provide optimum over-the-ear fit. The Tri Star H81N headset is available with the added benefit of a noise-canceling microphone, eliminating background noise by up to 92%. With its simple design, replacing the voice tube or earpiece is quick, cost-effective, & takes only seconds. With four sizes of user-selectable earbuds & an adjustable receiver arm, the Tri Star headset can be custom fitted to just about anyone. Weighing under one-half ounce, Tri Star is a pleasure to wear. Tri Star headset wearers can easily multitask as they talk on the phone. If it becomes necessary for wearers to leave their desks, they can simply use the Quick Disconnect feature without removing the headset, & the other party stays on the line. Plantronics uses a proprietary voice tube design, with patented Sound Guard Plus & Call Clarity technology, which contribute to the Tri Star headset's excellent sound quality.