The Explorer Pro with One Wireless Receiver is one of the most popular, portable sound systems on the market. This speaker is small, lightweight, and easy to transport. It is designed to provide crystal clear voice amplification, and is also great for music. It has built-in rechargeable batteries, operates 6-8 hours on a full charge, and there is a battery charging LED bar indicator on the back. It also comes with two universal microphone jack inputs, and a "Voice Over" music ducking feature. Use it at schools, sporting events, corporate events, places of worship, and more!