This plug-and-play headset is designed for use with your cordless telephone, your mobile telephone and even your PC Internet phone. Unique under and behind-the-ear headset is the perfect choice for those who wear eyeglasses. WindSmart microphone gets great sound with advanced technology that minimizes wind and fast-motion noise. Adjustable "close to the mouth" voice tube enhances clarity. Under-the-ear Flip Grip design keeps the headset securely in place. Enjoy the convenience of one-touch muting, along with adjustable listening and talking volume. Headset Type: Monaural; Headset Style: Under The Ear; Earpiece Type: Earbud; Earpiece Material: Plastic.