Monaural headset, noise-cancelling microphone, suitable for use with PC & Mac, UC optimized, bendable boom arm, large ear pad in a ultra lightweight headset. The SC 30 USB Headset is a deployment-friendly, single-sided wideband headset compatible with global providers of Unified Communications solutions such as Avaya, Cisco and IBM. With integrated call control unit and USB connector, it offers great functionality and convenience when connected to a UC solution. The SC 30 USB Headset is specifically designed for the Unified Communications market, where Sennheiser HD voice clarity and maximum call-handling flexibility can make a genuine difference to productivity.