Enhanced Flexibility: This office headset is designed for business professionals who communicate with a desk phone & PC/softphone Dual Connectivity: Switch from deskphone to PC with just a touch on the base station Noise-Cancelling Microphone: Filters out all unwanted background noise for crystal-clear conversations Fluid Conferencing: Up to 4 headsets can be paired to a single DECT base station for a call, making conferencing as simple as it should be Intuitive Call Control: Answer/end a call, mute the microphone, and adjust volume directly on the headset for added simplicity ActiveGard Technology: Featuring patented hearing protection to defend against acoustic shock caused by sudden sound bursts Peace of Mind: With a 2-year warranty on all headsets (including batteries), you never have to worry about the quality if your office headset Voice Clarity: Delivers a warm and more natural sound that allows you to catch the tone of your callers' voices and avoid misunderstandings