Sunnydaze 5W Solar Pump and Panel Outdoor Fountain Kit With Battery Pack and LED Light, 56 Inch Lift Overall Dimensions: 11.5 inch long x 8 inch wide x 1 inch deep. Panel comes with ground spike and wall mount hardware. The included LED light had a convenient feature where it turns on/off at night automatically. The solar on demand technology allows your 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. 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. Sunnydaze Decor backs its products with a 1-year manufacturer's warranty.