High quality dual-sided headset that is well-suited for companies that are in the process of integrating their office communication tools.Features include:-Sennheiser Voice Clarity: Wideband/HD sound for both caller and listener, giving more natural conversations and improved speech intelligibility-Flexible Boom Arm: Microphone always stays in the best position-Plug and Play Experience: Smooth deployment with leading global Unified Communications solutions-Activegard: patented Sennheiser ActiveGard hearing protection technology protects users from the potential danger of acoustic shock-Direct Call Control: answer/end calls, control volume, redial and reject incoming call directly from headset