SH 358 IP is a good quality double-sided wideband headset designed for all-day users working in noisy unified communications environments. With the focus on managing calls seamlessly using one device, SH 358 IP with integrated call control cable & USB (Universal Serial Bus) connector offers great functionality, easy handling & convenience when connected to a soft phone on PC. SH 358 IP productivity benefits include: soft phone & Microsoft Lync compatibility, unique sound-channeling foam ear pads, Sennheiser superior wideband acoustics, independently-adjustable double-sided headb&, self-adjusting ball-mounted speakers, 300° adjustable microphone boom, noise-canceling microphone, & Sennheisers unique, Active Gard acoustic shock protection technology.