8W 2200mAh Portable Voice Amplifier with Microphone & Display — Multifunctional Personal Speaker for Teachers, Tours, Events

Compact 8W portable voice amplifier designed for teachers and public presenters. It uses an 80mm large-diameter composite high-pitched crystal magnetic horn combined with a carbon atom lattice graphene diaphragm to faithfully reproduce the human voice. IC/CVC dual technology is built in, and the three tone ratio has been tuned by acoustic experts using a frequency-shift principle to greatly reduce howling frequency. A 2200mAh battery provides long runtime — based on typical teacher use of 2 classes per day, a full charge will last about 2 weeks under normal conditions. The unit accepts a memory card or USB drive for continuous loop playback of lesson-prep recordings. Includes microphone and display; ideal for teaching, tour guiding, promotions, gatherings, and similar uses.