Multimedia headset with microphone system Self-adjusting headband for optimum fit. A fashionable and movable design can comfortably adjust the microphone. It's an appliance for internet bar, enjoying talking and listening; Connects to portable equipment. Best mate with MSN & Skype. Application : Internet phone Video Conferencing Interactive Games Speed Recognition Multimedia Application Specification : Headphone Frequency range: 100 - 15000Hz Speaker : 30mm Dynamic type Impedance : 32 0hms Sensitivity : 101db 4db Length of Cord : 1.8M Plug : 3.5 mm stereo Max. Input power: 100mW Diver diameter: Φ 40mm Ear coupling: Supernatural Microphone Frequency range: 50 - 16000Hz Impedance :Low Sensitivity : -62db 3db Length of Cord : 1.8M Plug : 3.5 mm stereo