Characteristics and Interoperability KTV Professional Dynamic Microphone: Its wireless capability offers improved sound quality and a stronger, clearer signal. Details Product: Set of Wireless Microphones Characteristic: Adaptive Relevant Items: Seminar, Theater, KTV, Residence, Instruction, Vocal, Show, Lecture Lock noise for mute control. Deviation in frequency: ± 11 kHz Response frequency range: 80Hz–15kHz Stability of frequency: ± 0.005% 0.5% distortion at 1 kHz There are two channels available. Attenuation: -70dB M 50 meters is the operating distance in an open area. Power supply for receiver: 3V AA batteries power the transmitter. 20mW of transmit power Range of frequencies: 200MHz–270MHz Method of output: mixed and independent automatic selection Bundle Contains: 1 mini receiver, 1 wireless handheld microphone, 1 adapter, and 1 charging cable. Cordless Microphone With wireless capability, interference and dropouts are less likely and the signal is stronger, clearer, and of higher quality. The mic is elevated.