Features: Solar efficiency: Our solar-powered pool ionizer is a natural way to help keep your swimming pool clean. Our ionizer uses solar technology to significantly reduce the need for chlorine. Suitable for both above-ground and in-ground pools. Simple maintenance: It is recommended to clean the copper anode with a brush every two weeks, replace the copper anode every 1-2 quarters, and keep the pool water clean. During use, the surface of the copper anode may become oxidized and discolored, but this is normal and indicates that it is working effectively. Specifications: Material: copper, stainless steel, plastic, single-crystal silicon Color: blue Size: Solar pool ionizer: about 9.45 inches/24 cm in diameter, 6.3 inches/ 16 cm in height Scum eliminating balls: about 3.15 inches/ 8 cm in diameter Cleaning brushes: about 6.1 x 0.67 inches/ 15.5 x 1.7 cm Package includes: 1 Set solar pool ionizer 4 x Scum eliminating balls 3 x Cleaning brushes Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays