Fangrui Product Details 1. Wireless Collar Clip Microphone Smart Noise Reduction Mini Microphone 2. Transmission Frequency: 2.4ghz 3. Transmission Delay: Less Than 25ms 4. Operating Frequency: 2.4g Wireless Connection 5. Transmission Distance: About 20m (without Obstacles) 6. Microphone: 360-degree Omnidirectional Condenser Microphone 7. Input Voltage: 5v 8. Microphone Battery Capacity: 70mah 9. Charging Time: About 50 Minutes 10. Battery Life: About 5-6 Hours 11. Frequency Response Range: 20-20 Khz 12. Sensitivity: -38 Db 13. Signal-to-noise Ratio: 64 Dbm 14. Weight: About 25 G 15. Features: 16. The Microphone Has A Signal-to-noise Ratio Of 64db, Ensuring Clear Sound Quality, Reducing Environmental Interference, And Recording Every Detail Of The Sound. 17. Built-in Condenser Microphone, 360-degree Omnidirectional Sound Pickup, Comprehensively Capturing Sound Details And Restoring A More Three-dimensional And Rich Sound Effect. 18. Both The Transmitter And Receiver Digital Displays And Battery Level Indicators For Easy Monitoring. 19. Omnidirectional Sound Pickup With Strong Anti-interference Capabilities, Effectively Identifying Original Sounds To Meet Recording Needs In Noisy Environments. 20. 2.4ghz Wireless Technology Chip, Instant Connection Upon Startup, Automatic Frequency Matching. 21. Upgraded Low-cut + Dual Enc Noise-canceling Chips, Achieving Triple-layer Noise Reduction, With An Environmental Noise Filtering Efficiency Of Up To 99.. 22. Compatible With Smartphones, Computers, Dslrs, Speakers, And Other Devices. 23. Built-in Dsp Bionic Chip, Simulates Native Effects, And After Turning On The Reverb Effect, The Sound Is Rich And Has A Greater Sense Of Space 24. Lightweight Design, Mini Size, Comfortable To Wear, Portable And Beautiful 25. Supports Recording While Charging Your Mobile Phone, The Receiver Is Equipped With A Mobile Phone Direct Charging Interface, So You Can Record And Charge Your Mobile Phone At The Same Time