NEW UPGRADED SOLAR FOUNTAIN:The solar panel is upgraded from the old 1.5W to 2.5W and it is more powerful. The product also has a power storage function, which allows the product to continue working even under the weak sunlight. INTELLIGENT SOLAR PANELS:Different from other solar aerator fountains,our bird bath solar fountain pump can still keep working though 2 or 3 solar panels are covered by debris.This small solar powered fountain can continuously working for hours when it suddenly becomes cloudy. ECO FRIENDLY&AUTO WORKING- Gocheer solar hummingbird fountain can automatically start working within 3-5 seconds once exposed to sufficient sunlight. No battery or electricity needed. Actually,it is an Eco Friendly solar fountain pump. 5 KINDS OF NOZZLES:The max water spray hight is more than 23 inch and you can choose the different height and shape by using different {url removed}'s not only an interestiong solar bubbing fountain to decorate your garden,bird baths,pond,pool but also increasing the pH of water.