A dual impedance, desktop microphone from Bogen, MBS1000A Desktop Paging Microphone is ideal for industrial and commercial public address and paging applications. Along with its stylish rubberized design, it features 7 feet of four-conductor, 2-shielded cable, an impedance selector switch and non-skid non-marring base. Cardioid pickup pattern and a sensitivity of -72 dB +/- 3 dB account for its intelligible smooth and peak free sound. It provides simple push-to-talk or lift-to-talk operations for activating the microphone and any external equipment