18 LEDs Solar Powered Super Bright 3 Submersible Lamps RGB Color Changing Landscape Spotlight Projection Light for Garden Pool Pond Outdoor Decoration & Lighting, Underwater Light (18 Led Submersible Light) 1. Powerful solar panel and built-in rechargeable Li-ion battery collecting free solar energy for evening use. 2. RGB color changing LEDs. Auto on at night / auto off at sunrise(invalid when switch is turned off) 3. No AC or DC power needed, easy to set up, continuously light over 8 hours if it is fully charged. 4. Submersible light with IP68 protection can be used in water, especially perfect for decorating pools or ponds. 5. Lights are adjustable(90 degree) in the base and they only remained submerged when tied to heavy rocks.