Users who need to manage audio from two (or three) sources with a single headset. Teams who require both PC and desk phone connectivity. Blackwire Family Voyager, Family Audio 615 and 630M, Savi 400 Series, EncorePro USB Series, Bluetooth USB Adapter BT600, BT300 Entera USB (HW111N, HW121N) DA70, DA80, DA90. Built for UC applications and softphones from Microsoft, Avaya, Cisco, and others. Sold by each. Black.