Fangrui Product Details 1. Description: 2. Professional Noise Cancelling Lavalier Microphone: Built In Dsp Reverberation Chip, Dsp Intelligently Filters Ambient Noise. Used For Slr Cameras, Video Cameras, Tablet, Computer, Ios/android Phones, Sound Cards, Recording Pens, Mixers, Etc. 3. Large Capacity Battery: Built In Battery, Stronger Power Storage Capacity, Can Be Fully Charged In 1.5 Hours, And Lasts For 6 Hours, Meeting The Needs Of A Day's Use 4. Real Time In Ear Monitoring: The Receiver Comes With A 3.5mm In Ear Monitoring Interface, Voice Can Be Adjusted In Real Time While Recording. Safe Track Mode, Automatically Reduce The Sound By 6db, Not Afraid Of Popping Sound. 5. Small And Light: About 26g, Flexible, Compact And Portable, It Can Be Clipped On A Shirt Or Jacket. Using Wireless Transmission Technology, Stable And Anti Interference, And It Can Be Worn Freely Without Restraint. 6. High Sensitivity Condenser Microphone: 360 Sensitive Pickup Without Dead Angle, Quick Response,the Microphone Can Provide A High Quality Audio Performance In Live Broadcasting. 7. Specification: 8. Frequency Range: 610.50~669.50mhz 9. Oscillation Mode: Dsp Chip Frequency Locking 10. Frequency Stability: 10ppm 11. Rf Power: 10dbm 12. Audio Frequency Response: 40~18000hz 13. Receiving Sensitivity: -95~-71dbm 14. Distortion: 0. 15. Signal-to-noise Ratio: 90db 16. Audio Output: 350mv (max) 17. Battery Specification: Built-in 3.7v Lithium Polymer Battery 18. Size Chart: 19. Box Size: 16x13.5x4cm/6.30x5.31x1.57inch 20. Package Includes: 21. Transmitter + Receiver ; 1 Piece Trs Audio Cable ; 1 Piece Trrs Audio Cable ;1 Piece Windproof Cotton Ball ; 1 Piece Charging Cable. 22. Note: 23. Please Allow Slightly Error Due To Manual Measurement. 24. Due To The Difference Between Different Monitors, The Picture May Not Reflect The Actual Color Of The Item. 25. Wish You A Wonderful On-line Shopping!