The Plantronics DuoSet Noise Cancelling Headset is ideal for general office workers who make intermittent phone calls. This lightweight convertible headset is totally versatile; it can be worn either over-the-head or over-the ear. It has an adjustable headband and a conformable ear-hook, which will fit any shape or size of ear. The Noise Cancelling microphone eliminates up to 75% of all background noise, making the user's voice much clearer to the person on the other end of the line. It also means that calls can be completed faster...and with less likelihood of errors made.