Originally, when I first received the Solar laser projector, I set it up outside to be charged by the sun. For reasons beyond me, the unit did not charge sufficiently. It worked, briefly, for 2 days, then nothing.
I decided the set up a "return" for the unit. Only after that did I decide to plug in the unit to charge in the house for a few hours. To my surprise, the unit produced the most beautiful light shower for several hours. I don't think it was that bright outside...partially, because of the lack of solar power it contained, but it also might have been too far from the house (about 30 - 40 feet). It worked great inside for a smaller space. I haven't taken it back outside yet, but I was so impressed that I was trying to decide whether or not to keep it. Also, it operates with a remote control, sooo I don't even know if that was the problem for it not coming on after the first couple of days. It can be adjusted to display red, green, or both. I KEPT IT!
It would be helpful if the company sells one with a little more power to show up brighter on the desired surface.