Fangrui Product Details 1. Telesin Wireless Lavalier Microphone Noise-canceling Magnetic Button Microphone 2. Long-lasting Battery Life, With A Single Microphone Providing 6 Hours Of Usage, And The Battery Compartment Can Extend The Battery Life By 12 Hours. It Can Be Fully Charged And Revived In 1.5 Hours 3. Wide Compatibility, Plug-and-play, Supporting Most Type-c Interface Devices On The Market, Including Mobile Phones, Laptops, Tablets, Etc 4. 200-meter Sound Distance, Clear And Stable. Built-in Laser-engraved Antenna, Ensuring Stable Transmission Even At Long Distances 5. Sampling Rate Up To 48khz 24bit, Restoring Lossless Audio Quality 6. 70db Signal-to-noise Ratio, Enhancing Sound Purity And Suppressing Noise Interference 7. 110db Sound Pressure Level, With Greater Tolerance And Not Afraid Of Loud Noises 8. Parameters 9. Sampling Rate: 48khz 24bit 10. Frequency Response: 20hz - 20khz 11. Channel Mode: Stereo 12. Transmission Distance: 200 Meters In Line Of Sight 13. Transmission Method: Bluetooth 14. Noise Reduction Method: One-click Noise Reduction 15. Sound Delay: Less Than Or Equal To 24ms 16. Signal-to-noise Ratio: 270db 17. Mic Sensitivity: -36 +- 2db 18. Mic Directivity: Omnidirectional 19. Mic Sound Pressure Level: Greater Than Or Equal To 110dbspl 20. Microphone Battery: 65mah 21. Charging Compartment Battery: 300mah 22. Charging Duration: Microphone About 1.5 Hours, Charging Case About 1.5 Hours 23. Input Current: Microphone: 5v1a; Charging Compartment: 5v 1a 24. Size: Receiver: About 3.395 X 2.54 X 0.92 Cm; Microphone: About 2.57 X 2.5 X 1.26 Cm; Charging Case: About 7.5 X 4.2 X 3.56 Cm 25. Weight: Receiver:about 4.82g; Microphone: About 8.85g; Charging Case: About 43.12g 26. Packaging List: 27. - Charging Dock X 1 28. - Receiver X 1 29. - Microphone X 2 30. - Magnetic Clasp X 2 31. - Magnetic Clip X 2 32. - Data Cable X 1 33. - Windproof Cover X 2 34. - Storage Bag X 1