Solar Pool is effective and healthy option to treat pools, spas, and drinking water. Enjoy your pool without the chemical smells and dae. Reduce the need for shock and chlorine. -low maintenance. Powered by environmentally friendly solar panels with no expensive batteries to replace. No more bleached hair or bathing suits, dry skin or itchy eyes. Handles pools up to 22,000 Gal. The Solar Pool can kill algae and prevent it from returning, the unit simply floats in your pool and uses copper ionization to kill algae before it has a chance to form and take over your pool. Works with all pool types: Like In-ground, above-ground, saltwater, and chlorine pools Specification: Material:Plastic + electronic components Color: white Size: Approx. 16x6.7x15cm/6.29 x 2.63 x 5.90 inch Battery: built in rechargeable battery Package Includes: 1x Solar Pool 1x Brush Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!