Now you can use the space age technology of solar cells to create a fountain of light in your pool at night with our Floating Color Changing Solar Rainbow Light Features Include:Continuously changes color to create fascinating lighting effectsThe built-in LED bulbs automatically turn on at duskFloat all day in your pool they collect and store electricity Lights for up to 15 hoursRechargeable batteries will last up to 100,000 hours for years of poolside enjoymentDurable Construction!