Classroom UHF Microphone Bluetooth Voice Megaphone wall mount Speaker

Loud-speaker built-in professional DSP stereo audio processor to produce clear human voice and suppress the noise, with Wireless UHF microphone, Digital screen shows the A/B microphone channels from 1 to 16, microphone receiver distance 50M and 40W x 2 CH Amplifier For school teaching, Classroom, Teachers, MeetingRoom