AGPTEK Warm White Floating Flashing Waterproof Mood LED Ball for Pool Pond (Pack of 6) &diams; Waterproof LED Mood Ball -- AGPtEK Floating LED ball are waterproof plastic balls containing LED. They can be floating in your pool or pond. &diams; Easy To Use -- Our floating pool balls are easy to use. Simply throw them in water and it will work automatically. &diams; ANY OCCASION -- The LED Flashing Ball is ideal for your swimming pool or even a river! For Any Occasion, Party, Event, Celebration, Gift, put the Deco Balls floating in your Pool, Pond, Fountain, and Bathtub. Use as a night decoration, the warm white color helps to create romantic ambiance! &diams; Long Term Life -- One floating ball for pool is powered by 2*CR2032 batteries, which are replaceable. Battery life works up to 30-70hours! &diams; A Set of 6 PCS -- This is a set of 6 packs mood ball for decorating indoors and outdoors. The diameter of each ball is 7.8cm/ 3inch. They can be placed virtually anywhere using! Material:PVC Unit Dimension: diameter 7.8cm Shape:round ball Power supply:2*CR2032 batteries(replaceable) Battery last time:30-70hours Color : warm white Simply let it float in water,then the ball will light up Use a coin to twists off the bottom to replace battery,Please note the +/-polarity when you replace the battery. 6 * LED floating ball 12 * CR2032 coin batteries (inside the ball)