Features:
1. Digital headphone for sound chatting, telecommunication.
2. Plug and Play compatible with MSN, Skype directly.
3. 30mm high magnetization Nd magnetism coil-moving loudhailer, makes the voice even clearer.
4. 4 buttons on the control box, volume +/- speaker mute, microphone mute.
5. Combined sound card function
Specs:
Driver Unit: Ö30mm
Microphone Operating Voltage: 4.5V
Speaker Impedance: 32ohm±15%
Microphone impedance: 2.2 K
Speaker Sensitivity: 107dB±3dB
Microphone sensitivity: -58dB±2dB
Speaker Frequency Response: 20-20,000Hz
Microphone Frequency Response: 30-16,000Hz
Maximum Power Input: 30mw
Cord Length: 1.9 meters