Using ultra-sonic sound waves - no chemicals - FISH SAFE - With multiple openings it delivers three or five times more fog than our single head foggers. Completely safe. One year limited guarantee. Contains one 3-jet mini pond fogger with LED lights, a floating ring, and an outdoor transformer.-Disk is brass coated.-For underwater use only. Color/Finish: -Built in 18 LED lights with automatic color changing feature (red, yellow and blue). Dimensions: -Dimensions: 3'' H x 3'' W x 3'' D.