1.1. Slide up the volume button to power on the voice amplifier, and with a two second long press of the wireless lapel microphone, they will automatically pair and connect. 2. Tap the button on the wireless microphone to disconnect, tap again to restore the connection. 2.Reduce Teaching BurdenThe voice amplifier with wireless microphone includes a wireless lapel microphone that easily clips to a collar or tie. This design provides a clear advantage by eliminating the discomfort of traditional headset microphones. It greatly lightens the teaching load, making classroom instruction more comfortable and efficient! 3.Bluetooth 5.3 ConnectionThe voice amplifier for teachers is equipped with the latest Bluetooth 5.3 chip, facilitating quick connections to your phone, iPad, and other electronic devices for seamless playback of your favorite music. Its Bluetooth name is 'S57', and the wireless transmission distance is 20 meters. 4.Teacher Must HaveThis portable voice amplifier is an ideal and practical gift for educators who frequently address or instruct sizable audiences. The amplifier features high fidelity, clear sound output technology with no noise feedback, enabling classrooms with over 50 students to distinctly hear your voice, thereby providing effective protection for your throat.