Plantronics Savi W430 Computer Headset Over-the-Ear / USB & VoIP Provides hands-free communications for increased productivity on PC calls web conferencing and webinars has Noise-canceling microphone filters out background noise Conference in up to three additional headsets Up to six hours talk time Multitask hands-free for up to 300 feet. Latest DECT 6.0 with advanced wideband audio using CAT-iq technology (Cordless Advanced Technology - Internet and Quality)