Check the listing for details. Original Voice Amplifier for Teachers with 2 Microphones, Wireless Voice Ampl.... Condition: New. Listed at 54.96 USD. Amplify your voice and make it clear to your students with this wireless voice amplifier from Zoweetek. The device comes with two microphones and a power source that requires a single lithium-ion battery. The output wattage is 10 watts, and the material type is acrylonitrile butadiene. The product dimensions are 3.4 x 1.1 x 4.2 inches, and the item weighs 5.6 ounces. This microphone is suitable for teachers who want to make their voices heard in the classroom. The auxiliary connector type ensures that the device can be connected to a variety of devices. The black color name gives it a sleek and modern look. Get this original voice amplifier for teachers today and make your teaching experience more enjoyable.