Affordable and portable, the MicroFit makes small group instruction easy. With a built in wireless receiver and 20 watts of power with a 4" speaker for small groups, classes, or other facility small group sound needs. Completely portable -rechargeable battery (with built-in charger) or plug it in and run it from standard AC - take it where you need sound. The built-in wireless receiver allows you to use a dry body pack transmitter for class instruction, lecturing, making announcements, or multimedia presentations. MicroFit covers all of your wireless needs plus additional audio inputs to add the most popular personal MP3 players on the market. Optional travel bag and tripod stand. Transmitter and Headset were designed for low activity instruction. System not intended for in water use or splash proof - water damage is not covered under warranty.