Check the listing for details. WinBridge Bluetooth Voice Amplifier for Teachers Wireless Voice Amplifier TESTED. Color: Black, Condition: New – Open box, Made in China. Listed at 40.00 USD. The WinBridge Bluetooth Voice Amplifier is a wireless microphone designed specifically for teachers, providing clear and amplified sound for presentations and classroom lectures. With a sleek black design and easy connectivity via Bluetooth, this amplifier offers convenience and versatility for educators looking to enhance their teaching experience. The WinBridge brand ensures quality and reliability, making it a trusted choice for professionals in the business and industrial sectors. Perfect for use with projectors or other presentation equipment, the M801 model from WinBridge is a top choice for those seeking a high-quality voice amplifier. ( BRAND NEW OPENED BOX IN GREAT CONDITION TESTED TO MAKE SURE IT WORKS, WORKS PERFECTLY. )