J88 Mini Intelligent Noise Reduction Wireless Collar Microphone Features: 1. 2.4G wireless technology, ready to use, automatic frequency matching 2. DSP intelligent noise reduction technology, filtering noise, clearer human voice 3. Adopt high-quality condenser microphone, omnidirectional ultra-clear sound reception 4. Dual-core 2.4G chip, noise reduction without delay 5. Support real-time ear return monitoring to prevent live broadcast accidents 6. One-button operation, simple and convenient 7. Lavalier design, stable and convenient 8. Metal grid design on the top of the microphone, high-density spray prevention 9. Compatible with multiple devices 10. No APP required, plug and play 11. Recording & charging at the same time Product parameters: 1. Applicable objects: interviews, live broadcast crowds 2. Bluetooth version: 5.0 3. Transmission distance: 20 (barrier-free) 4. Working frequency: 2.4GHz 5. Sensitivity: -26DB 6. Transmission delay: 15ms 7. Frequency response range: 20-20KHz 8. Signal-to-noise ratio: 64DBM 9. Directional characteristics: omnidirectionalnon-directional 10. Battery capacity of the clip microphone: 80 mAh 11. Battery capacity of the charging compartment: 600 mAh 12. Microphone usage time: 6 hours when fully charged 13. Charging compartment usage time: 8 times when fully charged 14. Charging compartment size: 80 x 57 x 30mm 15. Receiver (RX) size: 46 x 15 x 9mm 16. Microphone (TX) size: 46 x 11.5 x 18.5mm 19. Product net weight: 86gset