DRIVE DIAMETER - 40mm IMPEDANCE - 32 SENSITIVITY - 105+/-3dB FREQUENCY RESPONSE - 20Hz-20KHz Mic DIAMETER - 6.*5.0mm IMPEDANCE - 2.2 DIRECTIVITY - OMNIDIRECTIONAL CABLE LENGTH - 2.2+/-0.15M LED - DC5V+/-5% WORKING CURRENT - -< 100mA HEADSET INTERFACE - USB CONNECTOR - 3.5mm