This lovely remote controlled floating Lily will create the pleasant sound of trickling water at the touch of a button. As with all our solar powered products, it is environmentally friendly with no operating costs. Most similar solar-powered water features will only function when the sun is directly on the panel. But our high-quality solar panel contains rechargeable batteries to store power for up to 5 hours of continuous use, meaning the cascade will continue to work even when there's no sun.