Specifications: Model: ONIKUMA K1-B Speaker diameter: 50mm Impedance: 20ohm±15% Sensitivity: 117dB±3dB Frequency: 20-20000Hz Mic dimension: 6.0 * 2.7mm Mic sensitivity: -36dB +/- 1dB Mic impedance: 2.2kohm Directivity: Omni-directional LED working voltage: DC5V +/- 5% Working current: Below 100mA Headset interface: USB (plug the USB connector, LED light is on, unplug for off) + 3.5mm stereo audio and mic …