Features: 
1. Multi-stage narrowband high frequency and intermediate frequency selective filtering are used to fully eliminate interference signals.
2. With low voltage design, the battery voltage can still work as low as 3V.
3. With special ALC circuit, there is no need to worry about excessive volume and distortion.
4. Using low power consumption components, the battery has a long service life.
5. Handheld microphone invisible antenna, beautiful and practical.
6. The handheld microphone has a battery indicator circuit, prompting to replace the battery.
7. Ad hoc handheld microphone switch noise shock wave elimination circuit.
8. Has extremely high frequency stability.
9. Less noise and large dynamic range.
10. Equipped with the function of reducing the echo and howling, which can effectively reduce the echo and howling. 
11. Unique noise squelch function, reject external interference to open the sound system of this machine.
12. The excellent chips and high-quality parts are selected to make the sound quality of this machine extremely excellent.  

Specifications:  
Material: ABS 
Effective distance: 30-50 meters
Receiving method: superheterodyne
Distortion: less than 1%
Dynamic range: 80DB
Carrier frequency: 200-300MHz
Frequency stability: <±30ppm
Dynamic range: >90dB
Harmonic distortion: <1%
Frequency response: 40Hz-18KHz±3dB
Audio output: independent: 0-±400mV
Hybrid: 0-±200mV
Temperature range: -10℃ to 50℃
Fixed receiver
Power supply voltage: 110-220V
Power consumption: 1W
Signal to noise ratio:> 80dB
False image interference ratio:> 70dB
Adjacent channel interference ratio:> 70dB
Receiving sensitivity: >12dBu(S/N=20dB)  
Applicable to: home, stage, dedicated for recording, musical instruments, dedicated for radio and television, dedicated for KTV, dedicated for conferences, dedicated for interviews

Packing list:
Microphones*2
Host receiver*1