Optimized for Microsoft Lync, MB Pro 1 UC ML and MB Pro 2 UC ML are premium Bluetooth® headsets for UC business professionals who demand wireless communication freedom, brilliant sound quality, and exceptional wearing comfort. With an ultra noise-canceling microphone equipped with a single channel noise reduction system, the MB Pro headsets reduce background noise, such as car road noise and air conditioning fans. Combined with Sennheiser HD sound and Room Experience™ technology*, the MB Pro headsets provide the listener with a clearer and more natural sound on calls. High-quality robust design includes a large leatherette ear pad for powerful sound and extra wearing comfort. Up to 15 hours of talk time. * Double-sided variants only.