“Speaker Diameter:40mm
Impedance: 20ohm±15%
Sensitivity:100db±3db
Frequency:20-20000Hz
Mic Dimension:6.0 * 5.0mm
Mic sensitivity:-42db±3db
Mic Impedance:2.2k ohm
Directivity:Omni-directional
Led working voltage:DC5V+/-5%
LED working current:Below 200mA
Headset interface: USB +1 X3.5mm Jack
Cable length:2.1m±0.15″