OVERALL DIMENSIONS - Submersible pump measures 11.5 inch long x 8 inch wide x 1 inch deep; Panel comes with ground spike and wall mount hardware CONVENIENT FUNCTIONS - The included LED light conveniently turns on and off automatically at night. SOLAR ON DEMAND - The solar-on-demand technology allows the fountain to run in and out of the sun. Sunlight is needed to charge the solar panel but then the "on demand" feature can keep the pump running when the clouds come out. VERSATILE OPTIONS - Battery backup will run about 4 hours if fully charged. Once depleted, it will switch to be powered by solar energy and the pump will resume running when the sun comes back out. Use it outside in the garden, pond, or lawn as a birdbath or a recirculating waterfall fountain. Important Legal DisclosuresWARNING: This product can expose you to chemicals including Lead, which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.