Fangrui Product Details 1. Yans Ys-m23-2 Usb Mini Port Video Conference Expanded Omnidirectional Microphone 2. Using Usb Driver-free Design, 5 Dual-condenser Microphones Work Synchronously, Making The Radio More Sensitive 3. 360-degree Omnidirectional High-sensitivity Dual-capacitor Microphone, Effective Diameter Of 6-12 Meters, No Dead Spots Within 20-60 Square Meters, Free To Walk Around When One Person Is In A Meeting, And Everyone Can Sit In Their Own Position When Meeting With Multiple People No Need To Approach Or Move The Omnidirectional Microphone 4. Using 256ms Echo Cancellation Algorithm, Built-in Voice Automatic Gain Balance (alc) Function 5. The Design Of Hands-free Speaker Microphone Makes It Easier For Users To Participate In Software Video Conferences Or Use Instant Messaging Software 6. Built-in High-performance Intelligent Dsp Chip, Input And Output Audio Directly On The Chip For High-speed Calculation Processing, Not Only Can Effectively Block Noise, Eliminate Echo, High-speed Processing 16k-24k Audio Sampling, Calculation, So That Software Video Conferencing Applications Can Be Obtained Clear And Clean Voice Communication Quality 7. A 3.5mm Microphone And Headphone Audio Jack Is Provided, Allowing Users To Connect A Microphone Or Headphone. And Provide A 3.5mm Audio Input And Output Interface, Which Can Be Directly Connected To Mobile Phones, Tablet Computers And Other Devices 8. Compatible With Usb 1.0 & 2.0, Free Drive Design 9. Equipped With Intelligent Two-color Led Lights, Which Can Easily Display The Status Of Each Function 10. Compatible With Various Embedded Terminals And Various Video Conferencing Software 11. Speaker Sampling Frequency: 24khz-48khz, Microphone Sampling Frequency: 16khz 12. Operating Voltage: 4.5v-5.5v 13. Sensitivity: -36 +- 3 Db 14. Frequency: 100-10,000 Hz 15. Output Impedance: Less Than Or Equal To 0.68 Kiloohms 16. Sound Pressure Level: 110db 17. Signal To Noise Ratio: Greater Than Or Equal To 58db 18. Compatible System: Windows8windows7vistaxp2000mac10.5