Microphone Signal to Noise Ratio(SNR): 96 dB Microphone Frequency Response: (60-15k) Hz Features: Cardioid pick-up pattern helps reduce background noise Extremely easy to set up with no additional power requirements Connects to a laptop, PC or Mac via a USB port and works with virtually any over-the-internet communications service No special drivers required the MXL AC-405 USB personal computer speakerphone allows you to conduct professional