uxcell PC Internet Headset Microphone Earphone MIC for Skype MSN Black Product Name :Skype Microphone ;Sensitivity :-60dBsmn;3dB Headphone Sensitivity: 107dBA+/-4dB (at 1 KHz) Impedance: 32ohm at 1kHz Headphone Frequency range: 100-20K Hz Microphone Frequency range: 50-16 KHz Polar Pattern: Omni-directional Max.Input power: 100mw Cord length: 1.8 meters Weight: 39g