When a little louder would be a lot better, turn on the VoiceSaver! Just plug in the microphone, clip it onto you belt and turn it on! Ideal for small meetings, facility tours, and classroom instruction. This unit is self-contained and weighs only eight ounces. Features 2 watts of power, 3.5 mm Mic/Aux input, separate volume and tone controls, 4 'AA" rechargeable batteries, headset microphone, and adjustable belt.