Eco-Friendly Solar Fountain Pump: runs automatically, no battery or electricity needed, only bright sunlight needed, no cost. Multiple Nozzle Spray Settings: 4 removable multiple fountain heads for different water patterns. Multi-Application: bird bath, fish tank, small pond, garden decoration, water circulation for oxygen, etc. Easily move to different locations, no plugs required. Free installation: Only need to Put it in water, and the water pump needs to be completely below the surface of the water, no wiring or plumbing needed. Advice:Please let the solar fountain pump get the direct sunshine to work; it may stop spraying when dirty or blocked and it will restart in 3 seconds when get full sunlight without any shadow; Keep enough water in a large enough container, especially bird bath because water will spray around in the process of spraying and if the container is not large to hold the spray, you will have to continue to add water. The stronger the sunlight, the higher the water spray,so more water will be lost.