UHF dual-channel receiving design, and the microphone and receiver adopt infrared synchronous frequency matching function. The receiver is equipped with a 6.35MM plug, which is plug-and-play. The characteristics of being light and portable and cost-effective will effectively replace large receivers and become the best choice for home entertainment, small conferences, outdoor audio and other occasions. The handheld microphone adopts an all-aluminum alloy handle with the latest generation of KT chip transmission line design to ensure the stability of the transmission signal. It has a stable and wide frequency response curve with a customized dynamic sound head, clear and natural treble, powerful mid-frequency, and mellow low frequency. The handheld microphone has multi-functional adjustment performance (including ECHO, high and low frequencies, and volume). The microphone uses LCD display, and the usage status is clear at a glance. The ideal distance is more than 50 meters, and 30 meters in complex environments. Receiver:Frequency range: UHF 640-690MHz (A.B 100 channels each, total 200 channels) Frequency stability: ±0.05% Dynamic range: Greater than 90Db Modulation mode: FM (frequency modulation) Frequency response: 60Hz-15KHz Signal-to-noise ratio: greater than equal 90dB Adjacent channel interference ratio: Greater than 80dB Image interference ratio: Greater than 80dB Usage range: greater than equal 50 meters Meters (open area) Receiver power supply: 18650 rechargeable battery (3.7V/1300mA) Transmitter (microphone): Carrier frequency: UHF640-690MHz (adjustable in frequency bands) Frequency stability: ±25KHz Signal-to-noise ratio: Greater than 105 dB Dynamic range: greater than equal 100 dB Type: dynamic or capacitive Polarity mode: single direction Freq