With four sizes of user-selectable earbuds and an adjustable receiver arm, the TriStar headset can be custom fitted to just about anyone. Weighing under one-half ounce, this headset is a pleasure to wear. Quick Disconnect lets you walk away from your phone while wearing your headset, voice tube microphone improves clarity of speech. Recommended for VoIP systems Are you interested in the lightest, most stable, over-the-ear style headset on the market? For a customized fit and feather light comfort, it"s hard to beat the H81 TriStar. There are three points of contact with the H81: above the ear, behind the ear and just inside the ear, so your headset remains stable at all times. In addition, Plantronics offers a selection of four interchangeable ear buds, providing a customized fit for every individual. The H81 speaker is designed to rest gently against the inside of the ear, close to the eardrum, increasing your ability to hear and understand each and every word of the conversation. Weighing in at less than 1/2 an ounce, the H81 is so comfortable you can put it on and forget it! However, although it is lightweight the H81 is built for commercial use, with durable junctions and rugged light weight cables. It also supports the most advanced sound technology available today; SoundGuard Plus and Call Clarity. Earbud style headsetSuperior voice tube technologyFour sizes of user-selectable earbudsUnique three-point fitWeighs less than half an ounceQuick Disconnect feature for added