Solar Power Fountain Pump Built-in Storage Battery Backup Brushless Submersible Pump Motor Solar Energy Garden Fountain Pond Plants Pool with Pump Protective Case and Filter Sponge (2.5W) Made up of highly efficient solar panel and new brushless pump. Start-up fast, efficient and strong stability. It floats on the water and has no electric outlet or external battery Suitable for bird bath, fish tank, small pond, garden decoration, water circulation for oxygen, etc Maximum water height: 80cm,Regular:45~80cm The pump will start automatically in 3 seconds when bright sunlight shines on the solar panel directly without any shadow