Specifications:
 Speaker Size: φ27-45MM  
 Impedance: 32Ω
 Sensitivity: 108dB±3dB at 1KHZ
 Frequency Response: 20-20,000HZ
 Max Input Power: 60mW
 Microphone: φ9.7×6.7
 Polar Pattern: omni-directional
 Sensitivity: -58±3dB
 Frequency: 1000HZ
 Weight: 80g
 Cord Length: 1.8metres
 Jack Type: φ3.5mm plug
 

Can be compatible with:
Computers, Web-Phones, Chatting on the web-site, Skype and so on.