This tabletop sound system opens up to become a lectern to hold papers and notes with a built-in light. It has 27 watts of output and can be either plugged in or used with its internal batteries. The sound quality and volume are much better when used plugged in. This tabletop sound system is good only for speaking. It is good for groups up to 100 people. If your group is larger than 100 people or outdoors, we also carry add-on speakers for this system. We also carry this sound system in a free-standing model.