BUILT-IN BATTERY BACKUP: The solar water fountain pump can store battery powered under direct sunlight, so as to keep working normally in cloudy and rainy days. INACTIVITY AND BLOCKAGE: Unlike the old pump, the 2019 pump will stop working automatically if it is inactive for 15 seconds or blocked. This will prolong its life. Then you need to add water or clean the pump. Restart it manually or it will restart automatically the next morning. WIDE RANGE OF APPLICATIONS: An ideal pump for birdbaths, aquariums, small ponds, swimming pools and gardens, water circulation for oxygen. It will definitely attract the attention of passers-by and bring more fun to your family. SPRAY WATER QUICKLY: The new 2019 solar powered birdbath fountain will automatically work in less than 3 seconds in the sun, with a spray height ranging from 50-75cm. The more sunlight it receives, the better it works. VARIOUS FOUNTAIN PATTERN OPTIONS: Our solar powered pond fountain comes with 6 nozzles for different spray