Wired Megaphone Recording Voice Amplifier for Teachers — Microphone Speaker with Bluetooth, TF Card, U Disk & AUX Support — Easy to Operate

Equipped with high-power speakers, this portable voice amplifier delivers clear, loud sound and covers a wide transmission range. It supports recording and digital music playback and accepts Bluetooth, TF card, U Disk and AUX input for flexible audio sources. For optimal amplification, position the microphone head about 1cm in front of your mouth and speak directly into it. If you encounter howling or feedback, reduce the volume and increase the distance between the unit and the microphone to prevent interference. Recharge the battery once it has been fully used; if the device will sit unused for an extended period, plug it in to charge once a week.