Sony ECM-CR120 Omnidirectional Clip-On Business Microphone with Noise-Reduction Meeting/interview clip-on microphone with supplied noise-reduction control box Noise-reduction technology cuts distracting sounds from papers, air conditioning, etc. within the range of voice frequencies Mic operates through plug-in power (clip-on use) or battery power (seated in the control box) Selectable high/low input level Includes windscreen, carry pouch, and 3.2-foot microphone cable with L-shaped, gold-plated .125-inch terminals