When a little louder would be a lot better, turn on the VoiceSaver! Just plug in the microphone, clip it onto your belt and turn it on! VoiceSaver features, 5 Watt RMS Amplifier, 19 Ounces with Batteries, AUX Input for LCD Projector or Other Audio Source, Headset Microphone and Rechargeable NiMH Batteries Included.