Driver unit : cD50mm Speaker sensitivity – : 110±3dB Speaker frequency response : 20Hz-20kHz Speaker impedance : 20Hz-20kHz Microphone sensitivity : -42±3dB Microphone directivity: Omni directional Microphone impedance: 2.2KQ Microphone dimension: 06mm Plug type: 3.5mm TRRS jack USB Cord length :2.lm Weight: 333g