Fangrui Product Details Enhanced Clarity & Performance: Equipped With Dual-voice-coil Speakers, This Wireless Voice Amplifier Delivers Crystal-clear Sound That Easily Fills Large Venues. It Features Advanced Anti-howling Technology, Stable Signal Transmission, And High-fidelity Sound Without Echoes Or Delays, Making It Ideal For Educators And Speakers. Convenience At Your Fingertips: Designed For Effortless Operation, This Classroom Microphone System Connects Automatically Upon Powering Up. It Includes A Handy Mute Button, Allowing You To Pause Audio Capture Instantly Without Needing To Shut Down The Entire System, Enhancing Usability During Presentations And Lectures. Versatile Audio Playback & Recording: Offering Multiple Connectivity Options, This Personal Voice Amplifier Supports Bluetooth, Tf Cards, And Usb Flash Drives. It Doubles As A Music Player With Easy Song Switching And Also Allows Recording Via Tf Card Or Usb, Ensuring You Capture Every Lecture Or Meeting. Color:white & Black Material:plastic Package Contents: 1 * Voice Amplifier