PULUZ Wireless Lavalier Microphone for iPhone iPad, 8-Pin Receiver and Dual Microphones (Black)Features1. Wireless pickup microphone 2.4G: wireless connection, can provide up to 48K high-fidelity recording 2. Low latency: no sense of delay recording 3. ENC is enabled by default: Excellent noise reduction performance, easy to record in noisy environments without noise interference 4. BT mode: In BT mode, it can be used for karaoke, adding background sound during recording, etc. 5. Dodging function: When connected to BT to play music, turning on the function recording can automatically suppress background Bluetooth music 6. Reverb function: Turn on the reverb to make the sound more infectious 7. Battery life: 300mAh high-capacity battery, continuous recording for 12 hours at a time.Specifications1. Product Type: Lavalier Wireless Microphone 2. Channel system: Dual Microphone one Receiver 3. Control method: Button 4. Active and passive: Active 5. 2.4G solution: Jerry AD6976M4 6. Working system: GFSK 7. Working frequency: 2.4G-2.4835GHZ 8. Radio sensitivity: -38db Effective distance: Greater than or equal to 10 meters 9. Transmitter shutdown power consumption: 2ua 10. Transmitter power consumption (video mode): 25ma 11. Transmitter power consumption (Bluetooth mode): 30-40ma 12. Receiver power consumption: 16ma 13. Receiver charging current for mobile phone: 1000ma 14. Microphone signal-to-noise ratio: Greater than or equal to 65db 15. Frequency response: 20Hz-20KHz 16. Monitoring: One-way monitoring 17. Microphone: Electret 18. Battery: 300mAh 19. Talk time: More than 10 hours 20. Standby time: (off state): 6 months 21. Charging input standard: DC-5VMAX 200+-10mA 22. Charging time: 1.5-2 hours