CYecho Hands-free Call Center Noise Cancellation Corded Binaural Headset Telephone with LCD for Telephone Counseling Services, Insurance, Hospitals, Banks, Telecom Operators, Enterprises The microphone (Mic) is noise-proof and can screen 90% background noise so as to perfectly and truly present the sweet voice of the telephone operator. The flat speaking tube shows the unique design and high quality even more and can rotates by 300 degrees. Head clip can stretch freely so that you can wear it comfortably. The voice communication effect is super clear. Hold, Flash and Mute function, Volume Control on the right side of the telephone. FSK/DTMF caller ID display, automatic checking. 2 digits PABX code setup, 32 digits pre-dial and edit.