Brings good Chi-and lots of rainbows-into your home according to Feng Shui. Solar powered, the genuine Swarovski crystal rotates and refracts sunlight to create a swirl of rainbows in your room. Attaches easily to your window with a suction cup. For best rainbow making results, always place the RainbowMaker in direct sun. You may have to adjust its placement at different times of the year depending on how the sun shines through your window.