Brand: ONIKUMA Model: K19 Color: Black/ White/ Grey(optional) Speaker diameter: 40mm Sensitivity: 118dB±3dB Impedance: 32O±15% Directivity: Omni-directional Mic dimension: 6.0*5.0mm Mic impedance: 2.2kO Frequency range: 15Hz-20KHz Mic sensitivity: -36dB±3dB Interface: USB+3.5mm Cable Length: About 2.1m