Solar on Demand Feature: Upgrade this fountain to be Solar on Demand which will use both solar energy and battery power so that you are not limited in when you can enjoy this fountain. Designed to use either solar power or battery power on sun mode the pump will be powered by solar energy while using part of the energy to charge the batteries. If you would like to run the pump on an overcast day or at night simply push the On/Off button to turn on the battery mode. If the batteries are fully charged the fountain will run for up to 4 hours. When the battery power is depleted the system will automatically switch to be powered by the solar panel and the solar pump will start up again when the sun comes out. This option also comes with LED lights which turn automatically at night. The LED lighting may be conveniently placed in the basin of this fountain for lighting effect. Made from a lightweight polystone material this fountain is wonderful as an outdoor wall fountain because it is weather resistant and won't corrode or rust like metal will. Comes with a 5-6' electrical cord for free placement of the wall fountain you just need a nail or screw to hang it on a wall. This wall fountain can be hung from a wall or set on the floor of your deck patio or on a level ground against a wall. Please note fountains should always be emptied and covered or emptied and brought indoors before freezing weather occurs. Electric Pump: Includes electrical pump and 5-6' electrical cord. Color can vary slightly on each fountain. Lighting can be different indoors and out as well as differences in computer monitors. So slight color variation is not a cause for return.