This Underwater Light Show is a floating disco ball designed with the pool or spa in mind. Get your groove on as colorful rays of dancing light bring an exiting party atmosphere to your backyard. Engulf your entire pool in a dramatic light show of patterns and colors. Details and features include: Turns on and off easily. Just press the top button once to turn it on, hold for 3 seconds to turn unit off Auto shut-off after one hour The light diameter is roughly 12 feet in up to a 5 foot deep pool Requires (3) AA batteries that are included Unit measures roughly: 5 1/2" in diameter x 4 3/4" high Five (5) light patterns All lights flash randomly All lights flash together Individual lights flash randomly All lights on Randomly cycle all shows