This wireless tabletop sound system opens up to become a lectern to hold papers and notes with a built-in light. It has a lapel microphone and has 22 watts of output. It can either be plugged in or has internal batteries, but sound quality and volume are better when plugged in. This sound system is good only for speaking and is good for groups of up to 70 people. If your group is larger than 70 people or outdoors, we also carry add-on speakers for this system.