The light can be powered via USB or batteries. It doesn't come with the latter, though, so be sure to pick up some AA batteries if you plan to go that route!Promising review: "I get more compliments on this than anything else in my house... it glows and it is so beautiful. The colors are so vibrant and honestly, it's the most beautiful thing in my whole living room." —Laurie AllenGet it from Amazon for $11.89 (available in five colors).