Sennheiser SH 250 Duo Corded Headset - VoIP Supply
IP&Go - 100% VoIP - VoIP Headsets - Sennheiser - EPOS SC 165 USB
1) Sennheiser Binaural VoIP Headset With USB Connector, Lightweight, Mute – Tech Lab Marketers
EPOS | Sennheiser ADAPT 130T USB II, On-ear, single-sided USB-A headset with in-line call control and foam earpad. Optimised for UC (1000899) | VoIP Warehouse Australia