The CM-201 is a minature Omni directional Electret lavalier / lapel / tie clip microphone, perfect or presentations and discussions. Secure fit is ensured due to the supplied tie clip, making it easy to attach and detatch. Cardioid polar pattern. 60-15,000KHz. Frequency response: 60Hz - 15kHz Net Dimension (WxHxD): ÿ5mm(W)* 9mm(H) Net Weight: 20.7g Polar Pattern: Omni-Directional Impedance: 2.2kΩ Sensitivity (at 1kHz): -60±3 dB* (1mV)*0dB Max. SPL for 1% THD: 130dB Connector: 4 Pin Mini XLR