Poly Savi 8210-M HeadsetThe Poly Savi 8210 M Headset delivers dependable, crystal clear audio for busy professionals who rely on calls, conferencing, and occasional music during the workday. Engineered around DECT wireless technology, this monaural, over the head headset provides a comfortable all day wear experience, a long wireless range up to 590. 6 feet, and a noise cancelling microphone to minimize background chatter. Its streamlined, single ear design keeps you dialed