The plantronics cs520 wireless binaural dect headset forms part of the new plantronics cs500trade series and sets a new standard for wireless desk phone communications providing audio quality for noisy environments they offer hands free productivity up to 120 metre away from your desk and great collaboration options pair your headset with any base by simply docking it or add up to three additional headset wearers into your call switch between narrowband audio to maximise battery life or w