Plantronics Savi W720 Binaural DECT Wireless Headset - RefurbishedThree way connectivity lets you easily switch and mix audio between PC, mobile and desk phone calls Automatically routes mobile audio to which ever device you pick up headset or mobile phone Easily transfer audio between headset and mobile phone to take calls on the road UC presence automatically updated when on a PC, mobile or desk phone call Energy efficient adaptive power system optimises for range and talk time Conference in up to three additional