I bought this for use as decorating lights for a special event. Depending on the projected distance, the lights may be quite dim, since it uses only small LED lights. The effects produced is not bad though, and it costs very little, at only 46 Yuan (S$9.10) including delivery. It can be powered by battery, and even has a built-in speaker (but you have to attach your own media player).
I found many interesting items sold by the same seller, such as Avengers themed mugs. You might want to check it out.