Fangrui Product Details 1. J6 Smart Digital Display Noise Reduction Magnetic Wireless Collar Microphone 2. Features: 3. 2.4g Wireless Technology Chip, Instant Connection, Automatic Frequency Matching 4. High-quality Condenser Microphone, Pure, Delicate And Vivid Sound Reception 5. Back Clip Design With Magnetic Accessories, Easy Installation And More Convenient To Carry 6. 2.4g Long-distance Transmission Technology Is Used For Sound Reception, Stable Transmission 7. Low-cut + Enc Dual Noise Reduction, Precise Reduction Of Noise Of Different Frequencies, And Retaining The Original Texture Of Human Voice 8. Real-time Ear Return Monitoring, Two-way Mono Audio Transmission, The Device Side Can Receive The Sound Of The Wireless Microphone Side, And The Wireless Microphone Side Can Receive The Sound Of The Device Side 9. Compatible With Multiple Systems 10. Product Parameters: 11. Applicable Objects: Interview-specific, Live Broadcast Crowd 12. Wireless Transmission: 2.4ghz Adaptive Frequency Hopping 13. Direction: Omnidirectional Frequency Response Range 20hz-20khz 14. Bluetooth Version: 5.0 15. Transmission Distance: Recording (measured) - 33 Meters Without Obstacles, 25 Meters With Back To The Camera; Playback (measured) - 35 Meters Without Obstacles, 27 Meters With Back To The Camera 16. Microphone Head: Dynamic Coil 17. Battery Capacity: Microphone (tx) - 130mah, Charging Case - 400mah 18. Charging Time: Microphone (tx) - About 6 Hours, Charging Case - Can Charge A Transmitter About 2.5 Times 19. Battery Energy: Microphone (tx) - 0.481wh, Charging Case - 1.48wh 20. Battery Output Voltage: Microphone (tx)charging Case: 3.7v 21. Input Sound Pressure Level: 100dbv (thd Less Than 0.) 22. Charging Case Size: 85 X 35 X 50mm 23. Receiver (rx) Size: 40 X 23 X 8mm 24. Microphone (tx) Size: 30 X 30 X 10mm 25. Product Net Weight: 111g