Brand: Onikuma Impedance: 16Ohm Sensitivity: 114dB +/- 3dB at 1KHz Frequency range: 20Hz-20KHz Mic dimension: 6.0 x 2.7mm Mic sensitivity: -36dB +/- 1dB Mic impedance: 2.2k8. LED working voltage: DC5V +/- 5% Headset interface: 3.5 mm + USB (LED LIGHT USB) Color: Gray