This product is a solar-powered low-voltage DC product, safe and efficient (adults and children can be in direct contact with the body for a long time), environmentally friendly solar panels, and the replacement cost is low. Working principle: The high-efficiency solar panel supplied with this product generates direct current to stimulate the anode rod to electrolyze the anions and copper ions in the water, so as to obtain the cleaning and algae-inhibiting effect quickly and effectively. 100% chemical-free, natural and non-irritating, high-efficiency, long-term water quality protection. Kill algae and reduce the need for chlorine: Solar pool ion can kill algae and prevent it from coming back. The device only floats in your pool and uses ionized copper to kill algae before it forms and takes over your pool. It can treat 22,000 gallons of water and reduce chlorine content. Descriptions: Material: Plastic + electronic components Color: White Size: 26x25. 5x19.7cm