The ChatterVox Original Complete Plus is a popular portable voice amplifier that can give your voice a tremendous boost in a lightweight waist worn pack. Featuring the exclusive “Genuine Tonality Matching” (GTM) technology, the sound of the ChatterVox Complete Plus is nothing short of amazing. No similar product comes close to the sound of the ChatterVox Original Complete Plus with GTM technology. It consists of a rechargeable amplifier and speaker unit along with an extremely comfortable and durable ChatterVox Deluxe Headset Microphone. You simply charge the ChatterVox overnight with the included charger, put on the amplifier and headset, plug the headset into the amplifier, adjust the volume knob and you’re set. ChatterVox helps to amplify the your voice up to 15 dB of additional amplification. This can be sufficient amplification for groups up to 50 people. 14 hours of operation on a 8-10 hour charge. For added ease of use, you can even substitute AA batteries if you forget to charge the ChatterVox Amplifier. Weighs less than 1 pound and sits comfortably in the padded neoprene sport pack. Available with either a headset, collar, or pencil microphone. Please specify.