Fangrui Product Details 1. Yans Ys-m11 Usb Mini Port Video Conference Omnidirectional Microphone(black) 2. Use Usb Driver-free Design, Built-in High-power Mid-woofer Speaker 3. 256ms Echo Cancellation Algorithm, Built-in Voice Automatic Gain Balance (alc) Function, No Matter How Far Away The Speaker Is, The Sound Can Be Picked Up Clearly 4. 360-degree Omnidirectional High-sensitivity Dual-capacitor Microphone, No Dead Spots For Radio Within 20-30 Square Meters, One Person Can Walk Around Freely During A Meeting, And When A Multi-person Meeting, Everyone Can Sit In Their Own Position At Ease Without Being Particularly Close Or Is A Mobile Omnidirectional Microphone 5. 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 Of High-quality 16k-24k Audio Sampling And Calculation, Allowing Software Video Conferencing Applications Can Get Clear And Clean Voice Communication Quality 6. Suitable For All Kinds Of Video Conferencing And Instant Messaging Software, Plug And Play 7. The Design Of Hands-free Speaker Microphone Makes It Easier For Users To Participate In Software Video Conferences Or Use Instant Messaging Software 8. Operating Voltage: 4.5-5.5v 9. Sensitivity: -34 +- 3 Db 10. Frequency: 100-10,000 Hz 11. Output Impedance: Less Than Or Equal To 2.2 Kiloohms 12. Signal To Noise Ratio: Greater Than Or Equal To 58db 13. Sound Pressure Level: 95db 14. Current Consumption: Less Than Or Equal To 0.5ma 15. Echo Cancellation: 256ms 16. Audio Processing: Aecagcnrnlpalc 17. Working Humidity: -20- 18. Dimensions: 210 X 193 X 43mm 19. Weight: 425g 20. Cable Length: 3m 21. Support System: Windows8windows7vistaxp2000mac10.5android