The USB plug is suitable for: KTV, online chat, MSN, SKYPE, online video conferencing, online singing, online recording, online games Professional network microphone, professional voice chat tool, plug and play, no driver required, portable and practical. How to use: Plug and play in XP and above systems, automatically the microphone of the computer's built-in sound card (some computers will not , just switch it manually once) Product features: 1. Cool black, more intimate color 2. High-performance microphone, true sound replica 3. High sensitivity, effective distance of more than 2 meters, say goodbye to the traditional 3.5-pin microphone effective distance 0.5M-1M limitation 4. No other device is needed for access and recording 5. Can be used with any computer with a USB port (including Apple), driver-free and plug and play above XP system 6. Flat and wide frequency response for crispness and clarity Product parameters: 1. Sensitivity: -47dB4dB 2. Sensitivity reduction: -3dB at 1.5V 3. Operating voltage: 4.5V 4. Frequency response: 10016kHz 5. Signal-to-noise ratio: More than -67dB 6. Cable length: 1.2M