The plantronics cs540 headset allows you to increase your productivity and multi task more easily while you talk it is the lightest decttrade headset on the market and offers a wireless range of 120 metres so that you can work away from your desk while conversing decttrade technology eliminates wi fi interference while the dsp technology provides more natural sounding voice the headset also offers a noise cancelling microphone so you can both hear and be heard clearly making it ideal f