Environmentally friendly and energy saving: work without battery under direct sunlight --- solar energy oxygen pump, no switch. Start-up 4 different nozzles can meet your different requirements for the jet height or jet shape. The height can be adjusted by changing the nozzles to avoid spillage from the sink. You can change the spray head easily.Multiple use: suitable for small birds pond, aquarium, pond, garden decoration, oxygen water circulation. Let your garden look so amusing decorated by the solar water pump.Easy installation and use: just put the pump in the water, the rest does the sun. The brighter the sun, the higher the water can be pumped. The water can rise up to 30-50 cm.Make sure you have enough water in the well so that the pump can stay fully underwater. You should clean the pump regularly to avoid clogging the pump due to dirt.