Professional HD Voice Clarity audio and the latest ActiveGard technology combined to give outstanding performance . Maintain energy and focus with clear communication between you and your listener and enjoy robust wired headsets with all-day comfort. In busy contact centers the EPOS | SENNHEISER IMPACT SC 230 is both reliable and user-friendly.. The fully noise-canceling pivotable boom microphone, ensures your conversations are audible, yet private. Features: Corded USB Headset Crystal Clear Calls 1000514 Specifications: Dimensions: H:6.0 x W:16.0 x D:20.0 cm Colour: Grey Guarantee:2 years Material: Plastic Model Number: 100009246