Plantronics 83545-02 Savi W710 Mono DECT Wi-Fi Head Set br Three-way connectivity lets you easily switch and mix audio between PC mobile and desk phone calls br Automatically routes mobile audio to whichever device you pick up - headset or mobile phone br Easily transfer audio between headset and mobile phone to take calls on-the-road br UC presence automatically updated when on a PC mobile or desk phone call br Energy efficient adaptive power system optimises for range and talk time