Plantronics introduced the first lightweight communications headset in 1962 & is today the world's leading designer, manufacturer & marketer of lightweight communications headset products. Whether worn over-the-ear or over-the-head, the convertible-style Duo Set means that you can make good use of your hands to multi-task. The headset is comfortably secure, & the sound quality is superb. Features Voice tube or noise-cancelling microphone options Three wearing styles: over-the-ear; over-the-head; behind-the-head with optional neckband Superior padded earpiece-to-ear coupling for clearer conversations Quick Disconnect feature lets you walk away from your phone while wearing your headset