Poly PL-211996-101 Voyager 4220 Uc-b4220 Usb-a-ww

- Certified for Microsoft Skype for Business Open Office- Built for UC applications and softphones from Avaya, Cisco, Skype and others- Up to 98 ft/30 range from supported smartphone or laptop with optional BT600 Bluetooth adapter (less with other Bluetooth devices)- SoundGuard? DIGITAL technology provides protection against audio spikes- Certified for Microsoft Skype for Business Open Office- Enhanced voice alerts tell you connection status- Bluetooth v4.1- Up to 12 hours talk, 15 hours music listen, and 13 days standby time- 2 microphones: 1 uni-directional; 1 MEMS-directional- weight: 150g- Control buttons: Track forward/track back/pause/play, mute