8v/1.4w solar battery; 6.3" diameter of solar panel 8 kinds of water style?assemble 6 attachments get 8 kinds of water patterns. Moving water attracts birds and discourages mosquitoes from breeding. with highly efficient solar panel, solar powered completely, no battery or electricity required, eco-friendly and save energe. Please kindly put it under full sunlight for working best.(no shadow or cloud).