Check the listing for details. Bluetooth 5.0 Voice Amplifier with Wireless Mic Headset, Waterproof WinBridge G. Condition: New – Open box. Listed at 50.00 USD. This Bluetooth 5.0 Voice Amplifier with Wireless Mic Headset from WinBridge is the perfect solution for those who want to amplify their voice without worrying about cables and wires. The device comes with a lithium polymer battery that provides up to 20 watts of output power, making it ideal for use in various settings, from classrooms to meeting rooms. With its auxiliary connector type and waterproof design, this voice amplifier is easy to use and transport. It weighs only 1.49 pounds and measures 3 x 6 x 7 inches, making it a compact device that can be easily stored in your bag or pocket. The item model number is M801, and it requires one lithium polymer battery to function. Get this voice amplifier today and enjoy the convenience of wireless communication!