The Sunnydaze Modern Cascading Bowls Solar Powered Fountain brings a piece of modern sculpture into your outdoor space with three tiers of cascading bowls. Once assembled, simply connect the solar pump to the panel and place the panel in direct sunlight. Mount and conceal the solar panel in a sunny place and enjoy! The Solar Battery Backup option allows one to harness solar energy even when there is no sunlight! The rechargeable battery pack charges throughout the day (with or without the fountain running) so the gentle water sounds may be emjoyed in the evening as well. To run on battery mode simply press the Battery On/Off button.