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 user39s voice much clearer to the person on the other end of the line it also