Receiver parameters:

Power supply voltage: AC220V

Adapter output voltage: DC12V/1A

Power consumption: 1.5W

Signal-to-noise ratio: >98dB

False interference ratio: >80dB

Adjacent channel interference ratio: >80dB

Receive sensitivity: >-100dB

Handheld microphone parameters:

Transmitting power: 12 dB

Modulation mode: FM

Pickup: Cardioid dynamic microphone core

Higher harmonics: <main wave 40dB

Battery voltage: 1.5V

Comprehensive performance:

Carrier frequency: 20Hz-18KHz

Working range: 600-670Mhz

Adjustable range: 64MHz

Channel spacing: 300KHz

Number of channels: 100

Frequency stability: +/-0.005%

Dynamic range: 100dB

Harmonic distortion: <1%

Frequency response: 20Hz-18KHz

Audio output: 0-800mV

Working distance: 50 meters