*** DISCONTINUED *** The Plantronics SupraPlus UNC headset is the gold standard in performance and comfort even for the most phone-intensive applications. SupraPlus UNC offers monaural or binaural models, with ultra noise-canceling microphone. Features: Binaural Headset Business-critical reliability and all-day wearing comfort Excellent receive-side audio quality improves listening intelligibility Ultra noise-canceling microphone provides industry-leading background noise reduction and echo performance Stylish, lightweight design enhances user experience Bendable, click-stop boom stays in position for clearer voice transmission Small, light, flexible cable designed for durability Quick Disconnect feature Supports all Plantronics amplifiers and USB-to-headset adapters Quick call feature headband twists out of the way for convenient quick call pick up Designed for the most demanding environments 79503-01