Meets Challenges: Our hub improves modern workplaces by providing a communication tool that exceeds users' expectations for dual-device usability and premium security Dual Connectivity: Connects to a computer and a desk phone to allow users to choose their own constellations Enhanced Clarity: With Super Wideband sound & ultra noise-canceling technology, this business headset provides crisp, natural sound for crystal-clear conversations Advanced Security: This hands-free office headset keeps all conversations confidential with 128-bit authentication and DECT Security certification Fluid Conferencing: Connect up to 4 wireless Sennheiser headsets or wired headsets to a single 5015 base station to make conferencing as simple as it should be Active Gard Technology: Featuring patented hearing protection to defend against acoustic shock caused by sudden sound bursts