When I saw all the good reviews, I decided to take a chance and purchase these laser lights. Be aware that they also have the same system in 2 colors. This is the 3 color model. Make sure that you get the 3-color device, which this review is about. I have bought many laser lights in my life and have been greatly disappointed by all of them. Not true of this little gem. This unit actually puts out a professional laser show. I did not expect that. But I was hoping that it would and it did. It does have a hook-up in the back for hooking into a professional lighting board, but I do not use that. More importantly, it has a microphone in the back with the sensitivity dial next to it. All you have to do is put this near a speaker and the lasers automatically go to the music. And no two patterns are the same. It is different every time. It changes as the music changes or the voice changes, meaning the singer. Essentially, the light show is never the same for each song. So who needs a mixing board? Just let it go by itself to the music. It has another dial on it that sets the perimeter of the light show. Very handy so that you don't light up areas where you don't want the lasers to go, like out the windows into your neighbor's windows. Very clever. And the best part about the whole thing is that it really really works. I put a couple of songs on and showed the laser show to my friends and they were blown away. This is not some kind of little star pattern laser light show. This comes across like a professional laser light show at a concert. I could not believe the quality of the price. But after reading all of the reviews that were so good, I just had to try it out, and I'm very happy that I did because it's everything I wanted in a laser unit and more. It also comes with remote control, battery included that works fine just as well. I really don't use the remote control a lot besides turning it on and off. The remote control does other things as well, but I use the laser light systems microphone in the back and let the music guide the light show or should I say create the light show. An incredible value for the price. Just make sure that you get the 3 color version, which this review is about. You will not regret buying this one. The look on my friend's faces was all I had to see for my own personal review. If the light show becomes too intense, just turn the control to the back and it will become less sensitive to the sound. Perfect.