Features: -Powered by solar energy, no batteries required, more environmentally friendly, safer and more energy-efficient. When sunlight directly hits the solar panel, it runs at a maximum speed of 3000 rpm to ensure optimal performance and efficiency. -Adopting high-efficiency monocrystalline silicon solar panel and equipped with double-layer metal protective cover, it can withstand impact and work reliably in various outdoor environments, and the waterproof design (IP65) can prevent short circuit caused by rain, ensuring durability and service life. -Two solar-powered fans effectively dissipate hot air and circulate fresh air to keep you cool and comfortable. .