Winterworm 1.8 Watt Solar Power Water Pump Garden Fountain Submersible Pump Safe and easy to use as it has no electric outlet or external battery. Eco-friendly design gives you a low carbon consumption life style. Decorates your garden if you have a pool or big aquarium. Reflesh the air and increase the humidity. Perfect for bird bath, fish tank, small pond, garden decoration, water circulation for oxygen, etc.