This solar powered rock fountain will enhance both the contemporary and natural elements in your outdoor space.Relaxing sounds of water cascading will resonate throughout the fountain area as water flows from the top-level, travels down the tiers, and ends in the largest pool at the bottom.This fountain can operate on solar and battery power when set to the on position.If it is a cloudy day or night time the battery will automatically run the fountain for a max of 4 hours on a full charge.