Plantronics H171 offers best-in-class sound quality with advanced speaker technology for natural sounding conversations. Comes with both rubberized ear hook and over the head headband for versatile wearing styles (see both photos). New ergonomic innovations offer unsurpassed comfort. Rugged construction for increased durability. Noise canceling microphone ideal for call centers and noisy offices. Innovative cord-management feature secures cord back and away from user's face. Convenient QuickDisconnect feature. (Same as prior models H151N and H161N.) Two-year warranty. Click photo to enlarge.