SX66 1 TX + 2 RX Lavalier Wireless Microphone with Digital Charging Box/Remote Control

1. Input voltage: 5V 2. Microphone battery capacity: 300mAh 3. Charging compartment battery capacity: 1100mAh 4. Battery life: 9h 5. Signal-to-noise ratio: 64dBM 6. Sensitivity: -42dB 7. Frequency response range: 20-20kHz 8. Transmission distance: 20-30m 9. 2.4G output distance: 50-100m 10. Adopts digital output and analog output, suitable for mobile phones, computers, tablets, speakers, amplifiers, cameras and other devices 11. Supports noise reduction, reverberation, two-way monitoring, audio input, mute 12. Wireless couplet, automatic connection when powered on, simple operation, supports double use