LFHEA018 - HEADSET with MIC USB LF-901 BlackSpeaker: ?30MMSensitivity: 120?3dB S.P.L at 1KHzImpedance: 32OFrequency Response: 20Hz-20000HzRated Power: 15mWPower Capability: 150mWPlug Type: USBMicrophone Unit: 6*5mm Dia.Electret condenserMicrophone Directivity: Omni DirectionSensitivity: -58dB?2dBCable: 1.8M