Working with the latest in wideband Vo IP technology, the Plantronics Supra Plus Wideband headset delivers the highest level of audio performance even in noisy environments. The Supra Plus Wideband helps overcome the challenges posed by traditional technology, delivering heightened speech clarity & life-like fidelity. Users will experience greater satisfaction through enhanced intelligibility & reduced miscommunication. A Noise-Canceling microphone filters out excessive background sound to further heighten call clarity.