Flexzion Solar Power Night Light LED Color Changing Waterproof Floating Globe Ball Lamp for Outdoor Swimming Pool Pond Path Party Home Decor Energy-saving, environment-friendly The solar panel converts sunlight during the day time and recharge the battery At night the light turn on automatically Automatic color changing from Red to Yellow, Green & Blue (not necessarily in that order) The independently operating lights have an average run time of 6 to 10 hours after fully charged